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