1. Place pork chops, soy sauce, vinegar and oil in a large ziplock bag. Turn bag several times to coat meat and place in refrigerator for 15 minutes.
2. Remove pork chops from bag; discard excess marinade. Warm a grill or grill pan to medium-high heat. Grill pork chops until cooked through, about 3 1/2 minutes per side. Transfer to a platter, sprinkle with cilantro and scallions, and serve.