Preheat oven to 375°F.

Cut chicken breast into 1 - inch cubes. Place in baggie, add garlic salt and cayenne pepper. Shake to evenly distribute.

Wash tomato and mushroom, dice.

Combine green beans, cream of onion, mustard, hot sauce, tomato, mushroom, cheese, chicken, and roasted peppers in mixing bowl. Stir together.

Spread evenly in small baking pan, and sprinkle fried onions on top.

Cover with aluminum foil, bake for 35-40 minutes.