Why? Because if you can make your own guilty pleasures there should be no guilt involved!
For the cheese powder: Preheat the oven to 175 degrees F. Mix the cheeses and spread in as close to a single layer as possible on a cookie sheet. Bake for 8 hours. The cheese will appear dry and a little greasy. Remove the cookie sheet and blot dry with paper towels. Remove the cheese and place on another clean cookie sheet. Blot again if necessary. Bake until very dry, 2 more hours. Remove the cookie sheet and blot a final time. Allow to cool in a dry place.
For the chips: Heat 2 inches of vegetable oil to 375 degrees F in a deep skillet. Fry the tortillas, in batches, until golden and crisp, about 3 minutes per batch. Place on a wire rack to drain. While still hot, season with the cheese powder.
Cook's Note: Feel free to riff with other flavors by adding powdered herbs, spices or different cheeses. Just remember to make the cheese dry!