Fast, crispy, juicy.
Preheat oven to 425°F
Place chicken on your cast iron pizza dish, skin side up. Salt and pepper. Flip the chicken, and salt and pepper the underside.
Place the chicken on the top rack of your oven. Cook for ten minutes. Remove from the oven (use quality oven mitts) and drain juices into a bowl.
Flip the chicken with kitchen tongs, so that it is skin side up. Put back into the oven. Cook for ten minutes. Remove from oven. If you're not sure whether the chicken is done, test it with a meat thermometer for ~150°F.
Wash your tongs or get a new pair. Remove the chicken from the cast iron and place it in a serving dish. If you leave it on the cast iron it will dry out. That's it! You are done!