I Found It!...after searching through stacks of recipes...
it's from Williams-Sonoma.com:
8 baby loin lamb chops, each 4 to 5 oz.and 1 to 1 1/4 inches thick, trimmed of fat and edges scored, brought to room temp.
Freshly ground pepper, to taste
4-5 Tbs. grainy Dijon mustard
Fresh parsley sprigs
Preheat oven to 500 F. Lightly oil a shallow roasting pan.
Rub both sides of chops with pepper and place in the roasting pan. Slather about 1 tsp. mustard on one side of each chop and roast, mustard side up, until the chops are browned on top, about 5 minutes. Turn chops over and slather 1 tsp. mustard on the other side. Continue to roast until the meat is lightly springy when pressed with a finger for rare to medium rare, about 5 minutes more or until done to your liking.
Garnish with parsley sprigs and serve immediately. Serves 4.
I made another version of this dish, brushing the chops with 1/4 C EVOO, sprinkled them with S & P and 2 Tbs. Herbs de Provence, and followed same cooking method.
Both were very good.