Grilled Pork Chops and Sweet Potato Wedges

4 small sweet potatoes (about 1 1/2 lb.), cut into 1/2 inch thick wedges
1 Tbsp. olive oil
kosher salt and pepper
2 scallions, chopped
4 1-inch thick bone-in pork chops (about 2 lb.)
4 Tbsp. Dijon mustard
2 tsp. ground cumin

Heat grill to medium-high. In a large bowl, toss the sweet potatoes with the oil and 1/4 tsp. each salt and pepper. Grill (reserve the bowl), turning often, until tender and slightly charred, 12-14 min. Transfer potatoes back to bowl and toss with the scallions.
Meanwhile, season the pork chops with the cumin and 1/4 tsp. each salt and pepper. Spread both sides of the chops with the mustard and grill until cooked through, 5-7 min. per side. Serve with potatoes.