how long should i cook a whole chicken for
â¢Roast whole (thawed) chickens for 20 minutes per pound, plus an additional 15 minutes. â¢Preheat oven to 450 degrees F (230 degrees C) and cook whole (thawed) chicken for 10-15 minutes. â¢Then reduce the temperature to 350 degrees F (175 degrees C) and roast for 20 minutes per pound.