DO-AHEAD TIP: Marinate lamb chops overnight or for at least 4 hours (see recipe).
Place lamb chops in a large zipper-topped plastic bag.
In a small bowl, whisk together remaining ingredients until well blended; pour mixture over lamb chops. Seal the bag and turn to coat lamb chops with marinade; refrigerate overnight or for at least 4 hours.
At time of cooking: Preheat outdoor grill to MEDIUM-HIGH. Remove lamb chops from bag (discarding marinade and bag); grill for 4 to 6 minutes per side or until cooked to desired level of doneness.