Preheat oven to 350°F.
Combine chicken, cream cheese, 1 1/2 cups of mozzarella, Alfredo sauce and Cayenne pepper in a large mixing bowl. Taste and add more pepper or seasoning if desired.
Spread into a 1 1/2 quart baking dish and sprinkle with remaining 1/2 cup of mozzarella. Bake for 20-25 minutes, or until hot and bubbly.
Serve with vegetables and crackers for dipping.