For the grilled young pork chops, mix the marinade, put the chops in and keep them in the refrigerator for about 6 hours, covered with foil and topped with 1 or 2 slices of lemon, turning the meat every now and then. If you need to do it faster, you can marinate the chops at room temperature for about 2 hours.
Cook potatoes with skin on until tender and keep warm.
Remove the chops from the marinade, dab them slightly and place the meat on the grill rack. Grill for 4 to 5 minutes per side, turning only once to the other side. Set aside and let rest. Season with freshly ground pepper and salt.
Cut potatoes with or without peel into 1/2-inch-thick slices, grill along with or roast if desired.
Finally, sprinkle grilled young pork chops with finely chopped garlic and flat-leaf parsley or rosemary.