Step 1

Mix yogurt, black pepper, coriander, cumin, paprika, cardamom, cinnamon, and nutmeg in a large bowl.

Step 2

Season both sides of lamb chops generously with salt and add to bowl with marinade. Turn lamb in marinade to coat; cover and chill at least 3 hours and up to 12 hours.

Step 3

Let lamb sit at room temperature 1 hour before grilling.

Step 4

Prepare a grill for medium-high heat. Grill lamb to desired doneness, about 3 minutes per side for medium-rare. Let rest 5–10 minutes.

Step 5

Meanwhile, toss onion, parsley, lemon juice, and sumac with a pinch of salt in a medium bowl.

Step 6

Serve lamb chops with parsley salad on top.