How to Make It
Preheat grill to medium-high (350°F to 400°F). Grill hot dogs about 6 minutes, turning occasionally, until heated through and grill marks appear. Grill buns, if desired.
Spread cut sides of buns with 1 tablespoon mustard each. Place hot dogs in buns. Top evenly with peppers, tomato, and pickle spears. Sprinkle evenly with celery salt.