Fajita stuffed chicken is a spicy and flavorful low-carb meal that's made in a single pan. Seasoned chicken breasts are stuffed with grilled onions, peppers, and cheese, then baked in the oven until juicy and tender.
In a cast iron skillet over medium heat, add olive oil. Add diced bell pepper and onion and cook until lightly browned and onions are translucent, about 5 minutes. Remove from heat and set aside.
Butterfly your chicken breasts by placing one hand on top and slicing through the side of your chicken breast, leaving the opposite side intact. This creates a pocket to place your filling.
Season chicken breasts with taco seasoning on both sides. Stuff chicken breasts with bell pepper, onion, and shredded cheese. Optionally, use toothpicks to keep the chicken breasts closed.
Reheat skillet over medium heat. Add more oil if needed. Add stuffed chicken breasts and sear for about 2 to 3 minutes per side, or until they're browned and release easily from the pan.
Transfer skillet to oven to finish cooking for anywhere from 15 to 25 minutes, or until chicken reaches 165 degrees Fahrenheit in the center. Baking time depends entirely on how thick your chicken breasts are, so I highly recommend using a meat thermometer to check for doneness.
Notes
Serve your fajita stuffed chicken on its own with your favorite toppings, over a salad, or with rice and beans.
Topping ideas for your fajita stuffed chicken: sour cream, guacamole, salsa, shredded cheese, pico de gallo, cilantro