Preheat grill to high. Grill corn and peppers until well charred. Remove from grill. Place peppers in a container and cover. Remove kernels from corn on the cob. Peel peppers, remove seeds and dice.
In a large bowl toss together charred corn, roasted peppers, cooked pasta, broccoli, tomatoes, red onion, and scallion. Drizzle with the dressing and toss until ingredients are evenly coated. Serve cold.
