Place each piece of chicken on a piece of foil. You could put two pieces in one packet if you like. Coat chicken pieces with some of your favorite bbq sauce. Pull up the sides of the foil to make a packet. Be sure to seal it tightly.
Cook on grill for about 20 minutes, you will hear it sizzle inside the packet. I turn the packets over a few times while cooking.
Remove packets to platter. Carefully open each packet (steam will come out so be careful) and place chicken back on the grill.
Baste with juices from packets and additional bbq sauce and cook until the skin is as crispy as you like and chicken is cooked through.