Preheat oven to 350 F, and grab a 1 quart casserole dish -- I used a 9" oven safe skillet.
Combine the softened cream cheese (8 ounces), hot sauce (1/2 cup), blue cheese (1/2 cup), 1 cup of cheddar, 1/4 cup of blue cheese, and chicken (1 cup) together in a large bowl.
Spread into the casserole dish, and flatten out the top with a spatula. Sprinkle with an even layer of the remaining cheddar cheese. Bake in the preheated oven for 20-25 minutes. You'll know it's done once the cheese on top has melted and the casserole is heated all the way through.
Allow the dip to cool for a few moments, then sprinkle the top with the remaining blue cheese and sliced green onions (1/4 cup). Serve warm, and enjoy!