Preheat your oven to 350 degrees Fahrenheit.
Line a baking sheet with parchment paper. Not waxed paper. Not foil. PARCHMENT.
Shred cheese and mix with seasonings or herbs (Do NOT add salt. Cheese is salty enough.) OR
Cut cheese into thin slices. (or get the cheese cut "for sandwiches" at the deli in your grocery store)
Either put little lumps of the shredded cheese (maybe 1 Tbsp or so) or squares of the sandwich slices (about 1/4 or 1/6 of a full slice per cheese crisp) onto the parchment, a couple of inches apart. They will spread as they bake.
Bake 5-7 minutes or until beginning to brown around the edges.
Allow to cool, to finish getting crispy.