Creating the flavorful Roasted Red Pepper, Spinach, and Mozzarella Stuffed Chicken is straightforward if you carefully follow these steps:

1. Preheat Oven: Start by preheating your oven to 375°F (190°C).

2. Prepare Chicken: Place chicken breasts between two pieces of plastic wrap. Using a meat mallet, gently pound them until they are about ½ inch thick. This helps them cook evenly.

3. Season Chicken: Rub the chicken breasts with olive oil, then season with salt, pepper, and Italian seasoning on both sides.

4. Make Filling: In a mixing bowl, combine the chopped roasted red peppers, spinach, mozzarella cheese, minced garlic, and Parmesan cheese (if using). Mix until well blended.

5. Stuff Chicken: Place a generous amount of the filling mixture onto one side of each chicken breast. Fold the other side over the filling and secure with toothpicks if needed.

6. Place in Baking Dish: Arrange the stuffed chicken breasts in a greased baking dish.

7. Bake: Place the dish in the preheated oven. Bake for 25-30 minutes, or until the chicken is cooked through and the juices run clear.

8. Rest: Once cooked, allow the chicken to rest for about 5 minutes. This helps retain the juices.

9. Serve: Remove the toothpicks (if used) and slice the chicken slightly to showcase the vibrant filling.

10. Garnish: Optional—add fresh basil leaves for a pop of color and additional flavor before serving.

Following these steps will guide you in successfully creating this flavorful and visually striking stuffed chicken!