Preheat oven to 375˚F. Combine salt, pepper, onion powder, garlic powder, and paprika in a small bowl. Rub chicken with 2 tablespoon olive oil then rub in spice mixture. Place on baking sheet or dish. Set aside while you prepare the other ingredients.
Combine all filling ingredients in a medium bowl. Cut a deep slit in the center of each chicken breast, but do not cut all the way through. Stuff each breast with some of the filling, heaping some onto the top of each one.
Over medium-high heat sauté chicken in oven-safe skillet until browned on the outside, about 2 minutes on each side. Place skillet into oven (or transfer to baking dish if your skillet isn’t oven-safe) and bake for 25-35 minutes or until heated to an internal temperature of 165˚F.
