Cut 8 pieces of heavy duty aluminum foil at least 20 inches each.
Lay out one piece of foil horizontally (left to right) on a flat surface, dull side up.
Next, place another piece of aluminum foil vertically over the horizontal piece, making a cross.
Spray the center of the foil lightly with cooking spray.
Add the chicken (one piece if using leg and thigh attached or two pieces if they’re separated). Then, add 3 pieces of corn and about 4 potato pieces, depending how many you have.
Cover the chicken and vegetables by bringing in the top and the bottom of the top piece (vertical one).
Next, bring up the sides (horizontal piece) and have them meet on top. Fold the edges together to seal. Make another thin fold to reinforce.
Next, crimp the sides to seal the packet. Make sure there is enough room, so that air can circulate in the packet.
Repeat the steps above until all 4 packs are done.
Place the packs on a large plate or pan to make it easy to carry out to the grill.