Best Slow Cooker Mediterranean Chicken

I’ve been making this slow cooker Mediterranean chicken on repeat lately, and honestly, it’s become my go-to for busy weeknights when I want something that tastes way fancier than the effort I put in. The combination of briny kalamata olives and bright lemon juice gives the chicken so much flavor while it cooks low and slow, and I love coming home to that amazing garlicky aroma filling my kitchen. Trust me, this one’s a keeper!

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 900-1050
• Protein: 110-125 g
• Fat: 32-38 g
• Carbohydrates: 22-28 g

Ingredients

• 4 large chicken breasts
• 1/2 teaspoon kosher salt (plus more to taste)
• 1/4 teaspoon freshly ground black pepper
• 1 tablespoon Italian seasoning
• 3 tablespoons freshly squeezed lemon juice
• 1 1/2 tablespoons minced garlic (about 4-5 cloves)
• 1 large yellow onion (diced into 1/2-inch pieces)
• 1 1/4 cups pitted kalamata olives
• 1 cup red bell peppers (cut into 1-inch squares)
• 2 1/2 tablespoons capers (drained)
• 1/4 cup low-sodium chicken broth
• 1 tablespoon extra-virgin olive oil
• 1 tablespoon fresh thyme leaves for garnish

Step 1: Prepare Mise en Place and Season the Chicken

• 4 large chicken breasts
• 1/2 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1 tablespoon Italian seasoning
• 1 large yellow onion
• 1 cup red bell peppers
• 1 1/2 tablespoons minced garlic

Dice the yellow onion into 1/2-inch pieces, cut the red bell peppers into 1-inch squares, and mince the garlic.

Pat the chicken breasts dry with paper towels, then season both sides generously with kosher salt, black pepper, and Italian seasoning.

I like to let the seasoned chicken sit for a few minutes—this helps the flavors penetrate the meat rather than just sitting on the surface.

Step 2: Sear the Chicken to Build Flavor

• seasoned chicken from Step 1
• 1 tablespoon extra-virgin olive oil

Heat the extra-virgin olive oil in a large skillet over medium-high heat until shimmering.

Sear the seasoned chicken breasts for 1-2 minutes per side until they develop a light golden crust.

You're not cooking them through—just building flavor and color.

This browning step adds depth that slow cooking alone cannot achieve, even though the chicken will finish cooking in the slow cooker.

Step 3: Build the Aromatics and Liquid Base

• 3 tablespoons freshly squeezed lemon juice
• 1 1/2 tablespoons minced garlic
• 1/4 cup low-sodium chicken broth
• kosher salt to taste

In a small bowl, whisk together the lemon juice, minced garlic, chicken broth, and a pinch of additional salt.

This creates your sauce base that will infuse the chicken with bright Mediterranean flavors.

I find mixing these wet ingredients separately first ensures the garlic distributes evenly rather than clumping in the slow cooker.

Step 4: Layer Ingredients in the Slow Cooker

• diced onion from Step 1
• seared chicken from Step 2
• 1 1/4 cups pitted kalamata olives
• red bell peppers from Step 1
• 2 1/2 tablespoons capers
• lemon-garlic broth mixture from Step 3

Add the diced onions to the bottom of your slow cooker, then arrange the seared chicken breasts on top.

Scatter the kalamata olives, red bell peppers, and drained capers evenly around and over the chicken.

Pour the lemon-garlic broth mixture from Step 3 over everything, making sure the liquid reaches around the chicken for even cooking.

Step 5: Cook Low and Slow

Cover the slow cooker and cook on low for 4 hours (or on high for 2 hours if time is limited).

The chicken is done when it reaches an internal temperature of 165°F and shreds easily with a fork.

The low, gentle heat allows the Mediterranean flavors to meld beautifully while keeping the chicken tender and juicy.

Step 6: Finish and Serve

• cooked chicken and vegetables from Step 5
• 1 tablespoon fresh thyme leaves for garnish

Taste the finished dish and adjust seasoning with additional salt and pepper as needed.

Ladle the chicken and vegetables into serving bowls along with plenty of the flavorful broth.

Garnish generously with fresh thyme leaves just before serving for a bright, herbaceous finish that contrasts with the rich, briny flavors of the olives and capers.

Best Slow Cooker Mediterranean Chicken

Delicious Best Slow Cooker Mediterranean Chicken recipe with step-by-step instructions.

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Prep Time 1 hour hr 5 minutes mins

Cook Time 2 hours hrs 5 minutes mins

Total Time 3 hours hrs 12 minutes mins

Servings: 4 servings

Calories: 975

Ingredients Method

Ingredients

  

• 4 large chicken breasts
• 1/2 teaspoon kosher salt (plus more to taste)
• 1/4 teaspoon freshly ground black pepper
• 1 tablespoon Italian seasoning
• 3 tablespoons freshly squeezed lemon juice
• 1 1/2 tablespoons minced garlic (about 4-5 cloves)
• 1 large yellow onion (diced into 1/2-inch pieces)
• 1 1/4 cups pitted kalamata olives
• 1 cup red bell peppers (cut into 1-inch squares)
• 2 1/2 tablespoons capers (drained)
• 1/4 cup low-sodium chicken broth
• 1 tablespoon extra-virgin olive oil
• 1 tablespoon fresh thyme leaves for garnish

Method

 

1. Dice the yellow onion into 1/2-inch pieces, cut the red bell peppers into 1-inch squares, and mince the garlic. Pat the chicken breasts dry with paper towels, then season both sides generously with kosher salt, black pepper, and Italian seasoning. I like to let the seasoned chicken sit for a few minutes—this helps the flavors penetrate the meat rather than just sitting on the surface.
2. Heat the extra-virgin olive oil in a large skillet over medium-high heat until shimmering. Sear the seasoned chicken breasts for 1-2 minutes per side until they develop a light golden crust. You're not cooking them through—just building flavor and color. This browning step adds depth that slow cooking alone cannot achieve, even though the chicken will finish cooking in the slow cooker.
3. In a small bowl, whisk together the lemon juice, minced garlic, chicken broth, and a pinch of additional salt. This creates your sauce base that will infuse the chicken with bright Mediterranean flavors. I find mixing these wet ingredients separately first ensures the garlic distributes evenly rather than clumping in the slow cooker.
4. Add the diced onions to the bottom of your slow cooker, then arrange the seared chicken breasts on top. Scatter the kalamata olives, red bell peppers, and drained capers evenly around and over the chicken. Pour the lemon-garlic broth mixture from Step 3 over everything, making sure the liquid reaches around the chicken for even cooking.
5. Cover the slow cooker and cook on low for 4 hours (or on high for 2 hours if time is limited). The chicken is done when it reaches an internal temperature of 165°F and shreds easily with a fork. The low, gentle heat allows the Mediterranean flavors to meld beautifully while keeping the chicken tender and juicy.
6. Taste the finished dish and adjust seasoning with additional salt and pepper as needed. Ladle the chicken and vegetables into serving bowls along with plenty of the flavorful broth. Garnish generously with fresh thyme leaves just before serving for a bright, herbaceous finish that contrasts with the rich, briny flavors of the olives and capers.