Preheat oven to 375 F
Coat a 9-13 in baking dish with a non-stick spray (I use virgin olive oil or coconut spray)
In a mixing bowl mix your sour cream, the garlic powder , seasoned salt, pepper and about 1 cup of the Parmesan cheese well (make sure the cheese is mixed well, sometimes it will clump)
salt and pepper your chicken and place in a hot skillet, browning both sides (should only take about 2 minutes per side once the skillet is hot)
Place your browned chicken in the baking pan evenly, making sure they do not overlap
Spread your mixture on top of the chicken , and then sprinkle the rest of the Parmesan cheese on top
Bakes in the oven 25-30 minutes, or until chicken is thoroughly cooked