After about 40 minutes, or once the lamb chops have reached an internal temperature of about 125°F, move them to the side of thr grill away from the center.
Leave the lid of the Pit Boss OPEN, turn the temperature to HIGH, and open the searing plate on the flamebroiler.
After 5-7 minutes, once the fire in the firepot has heated up, sear the lamb chops, one at a time or in small batches, 1-2 minutes total on each side until brown and sizzling. Turn and flip frequently to make sure no sides burn.
For Medium doneness, rmeove the lamb chops from the Pit Boss when they reach an internal temperature of 135°F.
Place on a plate, uncovered, to rest for 5 minutes before serving.