Preheat the oven to 375°F. Spray a large baking dish with nonstick cooking spray.
Place the chicken in the prepared baking dish. Season both sides of the chicken with the salt and pepper. In a small bowl combine the yogurt, cheese, and garlic powder. Coat the chicken all over with the yogurt mixture.
Bake for 40-45 minutes, or until the chicken registers an internal temperature of 165°F. Let the chicken cool for 5 minutes before serving.