Preheat the oven. Set your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish to prevent the casserole from sticking.
Prepare the chicken mixture. In a large mixing bowl, combine the shredded cooked chicken, cream of chicken soup, sour cream, and shredded Cheddar cheese.
Add the remaining filling ingredients. Stir in the sliced green onions, slivered almonds, cooked crumbled bacon, and hot sauce. Mix until everything is evenly distributed and coated in the creamy sauce.
Transfer to the baking dish. Spoon the chicken mixture into the prepared baking dish. Spread it evenly using a spatula.
Make the buttery cracker topping. In a separate bowl, combine the crushed buttery crackers and melted butter. Stir until the cracker crumbs are evenly coated.
Add the topping. Sprinkle the buttered cracker mixture evenly over the casserole, covering the chicken filling.
Bake the casserole. Place the baking dish in the preheated oven and bake for 40–45 minutes, or until the filling is hot and bubbly and the cracker topping is golden brown.
Rest briefly. Remove the casserole from the oven and allow it to rest for a few minutes before serving.
Serve warm. Divide into 8 portions and serve with your favorite vegetables or side dishes.