Marinate the Chicken: In a bowl, mix olive oil, lime juice, chili powder, cumin, paprika, garlic powder, onion powder, salt, and pepper. Add sliced chicken, toss to coat, and let it marinate for at least 10 minutes.
Cook the Chicken: Heat a skillet over medium-high heat. Add marinated chicken and cook for 5-6 minutes on each side until fully cooked. Remove and set aside.
Sauté the Vegetables: In the same skillet, add a little more olive oil and sauté the bell peppers until tender.
Assemble the Bowl: Divide cooked rice among serving bowls. Top with cooked chicken, sautéed peppers, black beans, corn, red onion, and cilantro.
Add Toppings: Sprinkle shredded cheese over the top, add salsa, a dollop of sour cream, and sliced avocado.
Serve & Enjoy: Mix everything together and enjoy your flavorful Chicken Fajita Burrito Bowl!