Creating Pizza Chicken is a breeze with these straightforward steps:

1. Preheat the Oven: Preheat your oven to 375°F (190°C).
2. Prepare the Baking Dish: Lightly grease a baking dish with olive oil to prevent sticking.
3. Season the Chicken: Season both sides of the chicken breasts with salt, pepper, garlic powder, and Italian seasoning.
4. Arrange Chicken in Dish: Place the seasoned chicken breasts in the prepared baking dish.
5. Add Marinara Sauce: Spoon marinara sauce over the chicken, ensuring each piece is well-covered.
6. Sprinkle Cheese: Generously sprinkle shredded mozzarella cheese on top of the marinara sauce.
7. Add Toppings: Distribute the sliced pepperoni, diced bell pepper, and diced onion evenly over the cheese.
8. Bake: Place the dish in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and the cheese is bubbly and golden.
9. Check Doneness: Use a meat thermometer to ensure that the internal temperature of the chicken reaches 165°F (75°C).
10. Garnish and Serve: Remove from the oven and let it rest for a few minutes. Garnish with fresh basil if desired.

These simple steps will guide you through the creation of this incredible Pizza Chicken effortlessly!