Trim fat from lamb chops.
Rub both sides with lemon; sprinkle lightly with garlic powder and pepper.
Combine next 3 ingredients; mix well, and press on all sides of chops.
Place chops in a 12- x 8- x 2-inch baking dish coated with cooking spray; insert meat thermometer into one chop, being careful not to touch fat or bone.
Bake, uncovered, at 500Â° for 4 minutes.
Reduce heat to 350Â°, and bake an additional 15 minutes or until thermometer registers 180Â°.
Garnish with lemon and lime slices, if desired.