Combine all the marinade ingredients except the lemon zest & rosemary sprigs in a jug. Use a stick blender and mix until all the herbs are finely chopped (If you don’t have a food processor, chop the herbs as fine as possible by hand and mix with rest of the marinade ingredients in a bowl).
Place the lamb chops, rosemary sprigs and lemon zest in a resealable bag and pour the marinade on top. Gently distribute the marinade to ensure all the chops are cover. Try to remove as much air as possible from the bag prior to sealing. Place the bag in a container and marinate for 4-6 hours or overnight. Remove the chops from the bag and shake the excess marinade off.
Braai the marinated chops over hot coals for 15-20 minutes turning often. Alternatively one can sear the marinated chops in a heavy bottomed pan for ± 3minutes on all sides. Then transfer to a 200°C preheated oven and roast for 8-10 minutes.