Combine chicken, cream cheese, hot pepper sauce, 1/2 cup pepper Jack cheese, Caesar cheese dressing, crumbled Gorgonzola cheese, seafood seasoning, and cayenne pepper in a large bowl.
Transfer chicken mixture to a 9-inch round baking dish and sprinkle with pepper Jack cheese.
Bake until lightly browned, 15 to 20 minutes. Remove from oven and garnish with cayenne pepper. Serve with chips and crostini.