Creating Cheesy Baked Chicken Breast and Peppers is a straightforward process. Follow these simple steps to ensure success:

1. Preheat Oven: Start by preheating your oven to 375°F (190°C).
2. Prepare Baking Dish: Grease a 9×13 inch baking dish with olive oil to prevent sticking.
3. Season Chicken: Season the chicken breasts with garlic powder, onion powder, Italian seasoning, salt, and pepper.
4. Sear Chicken: In a large skillet over medium-high heat, add olive oil. Sear the chicken breasts for 3-4 minutes on each side until browned. They don’t need to be fully cooked at this stage.
5. Add Peppers: Remove the chicken breasts from the skillet and place them in the prepared baking dish. Layer the sliced bell peppers over the chicken.
6. Pour Sauce: Pour marinara sauce evenly over the chicken and peppers.
7. Add Cheese: Sprinkle shredded mozzarella cheese generously over the top.
8. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 25 minutes. After 25 minutes, remove the foil and bake for an additional 10-15 minutes until the cheese is bubbly and slightly golden.
9. Rest: Once done, remove from the oven and let it rest for 10-15 minutes before serving.
10. Garnish: Optionally, garnish with fresh basil or parsley for added color and flavor.

These steps will guide you in creating this incredible dish effortlessly, ensuring you achieve a beautifully baked meal that everyone will love.