Make the buffalo chicken: Melt the butter in a saucepan over medium high heat. Add the hot sauce and chili powder and stir. Add the pulled chicken, toss together, and cook until heated through.
Make the blue cheese dressing: Combine the sour cream, blue cheese, green onion, garlic salt and black pepper in a bowl and mix well.
Toast the hamburger buns and and slather with the blue cheese dressing. Make sandwiches on the buns with the lettuce and buffalo chicken.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.