In a bowl, combine the minced garlic, chopped rosemary, lemon juice, olive oil, salt, and black pepper. Mix well to form a marinade.
Place the lamb chops in a shallow dish or a resealable plastic bag. Pour the marinade over the chops, ensuring they are well-coated. Cover the dish or seal the bag and refrigerate for at least 2 hours, preferably overnight, to allow the flavours to meld.
Set up your barbecue for direct grilling and preheat to 200°C.
Remove the lamb chops from the marinade and let any excess drip off. Place a long wooden skewer through each lamb chop turning it into a lollipop. Place them on the preheated grill and cook for about 4 minutes per side for medium-rare, or until they reach your desired level of doneness.
During the last minute of grilling on each side, brush the lamb chops generously with barbecue Sauce. This will create a flavourful glaze as the sauce caramelises slightly.
Rest and Serve: Once cooked, remove the lamb chops from the grill and let them rest for about 5 minutes to allow the juices to redistribute. Serve the glazed lamb chops hot, accompanied by your favourite sides.