Place lamb chops in (12 x 8-inch) utility dish.
Mix oil, sherry, vinegar, onion, lemon pepper seasoning, lemon juice, garlic, rosemary and Worcestershire sauce in 2-cup measure.
MICROWAVE 1 MINUTE, 30 SECONDS on HIGH, or until hot.
Pour over chops.
Let stand 3 hours, or overnight, refrigerated.
Arrange marinated lamb chops on microwave roasting rack in (12 x 8-inch) utility dish.
MICROWAVE 5 MINUTES on HIGH.
Turn chops over.
MICROWAVE 10 to 15 MINUTES on '6', or until chops are of desired doneness.