01 - Preheat the oven to 400°F. Lightly grease a baking dish with olive oil or cooking spray.
02 - In a small mixing bowl, combine the softened goat cheese, chopped chives, parsley, minced garlic, lemon zest, 1/4 teaspoon black pepper, and a pinch of salt. Stir until smooth and well blended.
03 - Using a small sharp knife, create a deep pocket in each chicken breast by slicing horizontally through the thickest part, being careful not to cut all the way through the other side.
04 - Carefully spoon the goat cheese mixture into each pocket, dividing it evenly among the four breasts. Secure the openings with toothpicks if needed to keep the filling inside during baking.
05 - Rub the outside of each stuffed chicken breast with olive oil, then season generously on all sides with 1/2 teaspoon salt, 1/2 teaspoon black pepper, and paprika if using.
06 - Arrange the stuffed breasts in the prepared baking dish and bake uncovered for 25 to 30 minutes, until the chicken is fully cooked through and the juices run clear when pierced.
07 - Remove from the oven and discard any toothpicks. Let the chicken rest for 5 minutes before serving to allow the juices to redistribute.