Put the garlic in a bowl with the ginger, lemon juice, oil, spices and seasoning. Blitz with a hand blender until smooth, then use to coat the lamb chops on both sides. Leave to marinate in the fridge for a couple of hours or overnight.
Heat a barbecue until hot. Barbecue the chops over the coals for 3 mins on each side until cooked but still pink and juicy in the centre.