Preheat oven to 450 degrees F or grill to medium-high.
Center one pork chop on each sheet of Reynolds Wrap(R) Aluminum Foil. Arrange vegetables beside each pork chop. Sprinkle pork chops and vegetables with garlic salt. Combine barbecue sauce, celery and onions; spoon over pork chops.
Bring up foil sides. Double fold top and ends to seal packet, leaving room for heat circulation inside. Repeat to make four packets.
