Place chops in a resealable plastic bag set in a shallow dish. For marinade, in a small bowl whisk together lemon peel, lemon juice, olive oil, shallot, mustard, 1/4 cup sage, the garlic, pepper, and salt. Pour marinade over chops; seal bag. Marinate in the refrigerator for 4 to 6 hours, turning bag occasionally. Drain chops, discarding marinade. Insert a wooden chopstick into a short side of each chop.