While flipping the chicken over, you might want to baste the chicken with a little more oil and add some additional salt and pepper to replace what has cooked off. If you want more of a smoky flavor to the chicken you can also add some additional wood chunks. Either way this is a good time to check on the fire and make sure you have enough coals to see you through the next 1 1/2 hours. If you need to light more charcoal do it in a charcoal chimney. Never put unlit charcoal on a live fire. It creates a bad tasting smoke and can get dust on your food.