Divide the veggies into groups, and portion them out on each sheet of tin foil.
Sprinkle each veggie packet with seasonings and add 1 tbsp oil to each packet.
Carefully fold and roll up the veggies in the tin foil. Wrapping the packets with a second sheet of tin foil before roasting this will help keep everything together and keep the oil from leaking out.
Roast over grill for about 5 minutes on each side.
Cut open the packets (be careful – contents are very hot!)