Creating Spinach Stuffed Chicken can be straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C).
2. Prepare Filling: In a large bowl, combine chopped spinach, ricotta cheese, half of the mozzarella cheese, minced garlic, Italian seasoning, salt, and pepper. Mix thoroughly to create the filling.
3. Prepare Chicken: Using a sharp knife, make a pocket in each chicken breast by slicing horizontally. Be careful not to cut all the way through.
4. Stuff Chicken: Spoon the spinach filling into each chicken breast pocket. Secure with toothpicks if necessary to prevent the filling from spilling out.
5. Heat Oil: In a large oven-safe skillet, heat olive oil over medium-high heat.
6. Brown Chicken: Place the stuffed chicken in the skillet and cook for about 4-5 minutes on each side until golden brown.
7. Bake: Top the chicken with the remaining mozzarella cheese and transfer the skillet to the preheated oven. Bake for 25-30 minutes, or until the chicken is cooked through and the cheese is bubbly.

Following these simple steps will lead you to a scrumptious and satisfying dinner.