You didn't mention the thickness of the chops. If they are thin (1/2" or so) then a very hot fire, liberal use of Montreal Steak seasoning and three to four minutes a side.
If they are thicker, then same seasoning, a quick sear on each side then off to indirect until they are done to your preference.
I almost always use a full chimney of charcoal, dump on one side and level the top of the charcoal. This puts the charcoal near the food grate for a higher temperature for searing. I often use a couple of fire bricks on their sides to keep the charcoal in place and high. On the indirect side, I place a throw-a-way aluminum pan to catch the fat. I believe the aluminum also helps to reflect heat to the underside of the food.
My grill is the OTG 22.5".
FWIW
Dale53