DO-AHEAD TIP: Marinate lamb chops overnight or for at least 5 hours (see recipe).
In a large bowl, combine all ingredients except lamb chops; blend thoroughly.
Place lamb chops in a large zipper-topped plastic bag and pour tomato/salsa mixture on top. Seal bag and refrigerate overnight or for at least 5 hours.
At the time of cooking, heat indoor or outdoor grill to MEDIUM-HIGH. Remove lamb chops from marinade (reserving marinade) and grill for 4 to 6 minutes per side or until the desired level of doneness is achieved.
Bring the marinade to a boil in a medium saucepan; reduce heat and simmer for 5 minutes or until heated through and slightly reduced.
Serve sauce over lamb chops.