Heat Queso Bravo Cheese Dip according to directions on pouch. Hold warm until service.
To build sandwich, layer 3 ounces chicken, 1 ounce mushrooms, 1 1/2 ounces onions, 1 ounce bell peppers and 1 1/2 ounces cheese dip on bottom half of bun. Cover with top half of bun.
Place two sandwich picks through bun; slice sandwich in half.
If serving for take-out, wrap sandwich in foil wrapper or place in to-go container with selected side items.