Preheat your oven to 375°F (190°C).

Lightly grease a baking dish with olive oil.

In a bowl, blend the softened cream cheese, shredded cheddar cheese, sour cream, minced garlic, onion powder, garlic powder, paprika, salt, and pepper until well combined.

Place the chicken breasts in the baking dish and make a pocket in each breast using a sharp knife.

Generously fill each chicken pocket with the cream cheese mixture.

Drizzle the tops of the chicken breasts with olive oil and sprinkle with additional salt and pepper.

Cover the dish with aluminum foil and bake in the preheated oven for 20 minutes. Then, remove the foil and bake for an additional 10-15 minutes, or until the chicken is cooked through and the cheese is bubbly.

Ensure the chicken reaches an internal temperature of 165°F (75°C).

Remove from the oven, let it cool slightly, and sprinkle with fresh parsley before serving.