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 tsp black pepper, and a pinch of salt. Stir until smooth and well blended.
03 - Using a small sharp knife, cut a deep pocket into the thickest part of each chicken breast, being careful not to cut all the way through the other side.
04 - Divide the goat cheese filling evenly among the four chicken breasts, spooning it into each pocket. 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 tsp salt, 1/2 tsp black pepper, and paprika if using.
06 - Arrange the stuffed chicken breasts in the prepared baking dish and bake uncovered for 25 to 30 minutes, until the internal temperature reaches 165°F and juices run clear when pierced.
07 - Remove the chicken from the oven and discard any toothpicks. Let the breasts rest for 5 minutes before slicing and serving to allow the juices to redistribute.