Split an onion in half and then slice into long strips. In a mixing bowl, add flour and 2 tbsp's. of Dad's All Purpose seasoning and blend the ingredients together. Drop in the onion slices and cover them in the flour mixture.
Set the grill for direct heat and place a cast iron skilled directly on the grates. Add enough olive oil to cover half the pan and wait until oil heats up to 375 degrees. Carefully, add the seasoned onion slices into the oil and wait until they turn a golden brown color before removing from the oil.
Preheat the grill to 375 degrees and set it for direct heat. Sear the pork chops 5 minutes total flipping them halfway through the cook. Brush on the BBQ sauce on both sides and let it caramelize over the top.
Remove the pork chops from the grill once they reach an internal temperature of 140 degrees. Let them rest 5 minutes before assembly.