Preheat the oven to 375 degrees. In a large bowl mix together the melted butter and crushed kettle chips. Set aside. Cook noodles are according to package directions (take 1-2 minutes off of the cooking time because the pasta will continue to cook in the oven). Drain and set aside.
Meanwhile, heat a large saucepan to medium-high heat. Add the butter and allow it to melt. Whisk in the flour to create a paste. Cook while whisking for about 2 minutes. Pour in milk and beer while whisking constantly. Stir in the cheddar and parmesan cheeses and stir until melted. Reduce heat to medium and continue cooking and stirring for 5-6 minutes or until the mixture thickens. Remove from the heat. Stir in pepper, paprika, and nutmeg.
Lightly grease a 9×13” casserole dish. Add the drained noodles to the casserole dish, and then pour the cheese sauce over the noodles. Gently mix together the noodles and the cheese sauce. Top evenly with the kettle chip mixture. Place into the oven and bake for 25-30 minutes or until bubbly and golden on top.