Guidelines:

Make the Roux: In a saucepan over medium heat, melt the unsalted butter. Stir in the wheat flour and chili powder, cooking for about 1 minute to remove the raw flour flavor.
Add the milk: Gradually add the milk to the saucepan, stirring constantly to prevent lumps. Continue cooking, stirring, until the mixture thickens.
Add the cheese: Reduce the heat to low and add the grated cheddar to the pan. Stir until the cheese is completely melted and the sauce is smooth and creamy.
Dressing: If desired, add hot sauce to the cheese sauce for extra flavor. Stir well.
Serve the crispy chips warm with the hot cheese sauce on the side for dipping. Enjoy your delicious homemade snack!