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Slow Cooker Chicken Fajitas Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.9 from 50 reviews
  • Author: Hannah
  • Prep Time: 15 minutes
  • Cook Time: 2 hours 30 minutes
  • Total Time: 3 hours 10 minutes
  • Yield: Serves 4
  • Category: Main Course
  • Method: Slow Cooking
  • Cuisine: Tex-Mex

Description

This Slow Cooker Chicken Fajitas recipe features tender, juicy chicken strips simmered with colorful bell peppers, onions, and a flavorful homemade fajita seasoning blend. Perfect for an easy, hands-off dinner, this dish can be made in a slow cooker or an Instant Pot, delivering authentic Tex-Mex flavors with minimal effort. Serve with warm tortillas and your favorite fajita toppings for a delicious and satisfying meal.


Ingredients

Units Scale

Chicken and Vegetables

  • 2 pounds boneless, skinless chicken breasts, sliced into thin strips
  • 3 large bell peppers, sliced
  • 1 large onion or 2 small onions, sliced

Liquids and Seasonings

  • 15 ounces diced tomatoes or salsa
  • 1/3 cup fajita seasoning blend (see below)
  • Salt & pepper to season the chicken
  • 3/4 cup low-sodium chicken broth (for Instant Pot only)

Homemade Fajita Seasoning Blend

  • 2 tablespoons chili powder
  • 1 tablespoon cumin
  • 1 1/2 teaspoons salt (or more to taste)
  • 1 1/2 teaspoons oregano
  • 1 teaspoon paprika
  • 1 teaspoon garlic powder
  • 1 teaspoon onion powder
  • 1/2 teaspoon black pepper

Instructions

  1. Season the Chicken: Season the sliced chicken breasts generously with salt and pepper to enhance the flavor before cooking.
  2. Prepare Slow Cooker: Add the seasoned chicken, sliced bell peppers, sliced onions, diced tomatoes or salsa, and the fajita seasoning blend into the slow cooker. Stir well to combine all ingredients evenly.
  3. Cook in Slow Cooker: Cover and cook on HIGH for 2 to 3 hours or on LOW for 4 to 6 hours until the chicken is tender and cooked through, and the vegetables are soft.
  4. Instant Pot Sauté Step: Turn the Instant Pot to the sauté setting. When hot, add a small amount of oil along with the onion and bell pepper slices. Cook for 3 to 5 minutes until softened, stirring occasionally.
  5. Add Ingredients to Instant Pot: Season the chicken with salt and pepper, then add the chicken, low-sodium chicken broth, diced tomatoes, and the fajita seasoning blend to the Instant Pot. Stir to combine everything well.
  6. Pressure Cook in Instant Pot: Close the lid and seal the valve. Set the Instant Pot to high pressure and cook for 8 minutes. When the cooking time is complete, perform a quick release of the pressure by carefully opening the valve.

Notes

  • Do not leave the chicken fajitas on the warm setting in the slow cooker as this can cause the chicken to overcook and become dry.
  • The fajita seasoning can be adjusted to taste; increase or decrease salt and chili powder based on preference.
  • Serve with warm tortillas, sour cream, guacamole, and fresh cilantro for a complete fajita meal.
  • Leftovers can be refrigerated for up to 3 days or frozen for up to a month for meal prep convenience.

Nutrition

  • Serving Size: 1 serving (approx. 1/4 of recipe)
  • Calories: 320
  • Sugar: 6g
  • Sodium: 550mg
  • Fat: 7g
  • Saturated Fat: 1.5g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 14g
  • Fiber: 3g
  • Protein: 45g
  • Cholesterol: 90mg