Mix all the marinade ingredients together and rub on the chops, then marinate at room temperature, covered, for up to 2 hours, or refrigerate overnight. (I did the room temp for 1 hour.)
Stir the skordalia sauce ingredients together.
Barbecue the lamb chops for 3-5 minutes per side. (The book says you can alternatively broil them 3-5 minutes per side.) They should be about 120 to 135 F at the thickest part.
Let rest a few minutes, then serve with the sauce on the side.