1. In small bowl, combine thyme, garlic powder, pepper flakes and salt. Brush both sides of pork chops with canola oil. Sprinkle thyme mixture evenly over both sides and press down with fingertips to adhere. 2. Heat large, nonstick skillet over medium-high heat. Cook pork chops 4 min. on each side or until barely pink in center. 3. Meanwhile, in small saucepan, whisk together sour cream, mustard, milk, canola oil, and tarragon. Place over low heat until warmed, about 2-3 min. Do NOT bring to a boil. 4. Spoon equal amounts of mustard sauce on each of 6 dinner plates. Place pork chops on top of sauce and sprinkle with black pepper.