Preheat your oven to 350°F (175°C).
In a large mixing bowl, combine the cream of chicken soup, sour cream, and poppy seeds.
Stir in the shredded rotisserie chicken. Season with salt and pepper.
Pour the mixture into a greased 9x13-inch baking dish and spread it out evenly.
Top with crushed gluten-free buttery crackers.
Drizzle the melted butter evenly over the cracker topping.
Bake for 30 minutes or until bubbly and the top is golden brown.
Let it sit for 5 minutes before serving. (Or just dive in. No judgment.)