Preheat oven to 375°F (190°C). Lightly grease a baking dish.
Place chicken breasts in the baking dish and season with salt and pepper.
In a small bowl, mix Caesar dressing and sour cream until combined.
Spread the mixture evenly over the chicken.
Sprinkle Parmesan cheese generously on top.
Bake for 25-30 minutes or until chicken reaches an internal temperature of 165°F (74°C).
Garnish with fresh parsley before serving.