Creating Rolled Chicken with Feta & Spinach can be an enjoyable experience. Just follow these steps for success:

1. Preheat your oven to 375°F (190°C).
2. Prepare the Filling: In a bowl, mix the chopped spinach, feta cheese, sun-dried tomatoes (if using), minced garlic, olive oil, oregano, salt, and pepper. Set aside.
3. Prepare the Chicken: Place each chicken breast between two sheets of plastic wrap. Using a meat mallet, pound the chicken to about 1/2 inch thick for even cooking.
4. Fill the Chicken: Spoon a generous amount of the spinach and feta mixture onto one side of each chicken breast.
5. Roll the Chicken: Starting from the filled side, roll up each chicken breast tightly. Secure with toothpicks or kitchen twine if necessary.
6. Sear the Chicken: In a large oven-safe skillet, heat a little olive oil over medium-high heat. Add the rolled chicken and sear on each side until lightly browned, about 3-4 minutes per side.
7. Bake the Chicken: Transfer the skillet to the preheated oven and bake for 20-25 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (75°C).
8. Serve: Remove the chicken from the oven. Let it rest for a few minutes before slicing into rounds.
9. Plate the Dish: Arrange the chicken slices on a serving platter and drizzle with marinara sauce. Garnish with fresh parsley if desired.

By following these steps, you’ll create an extraordinary meal that showcases the wonderful combination of chicken, feta, and spinach.