I made these with one potato, but feel free to use two or three or more if you're making them for more than just yourself, secretly, while your husband isn't around.
1 t salt
1 T olive oil
1/3 c Parmesan cheese
Preheat oven to 425, and line a cookie sheet with some foil (clean up is so easy!). Cut potato lengthwise into strips about 1/3" wide, and then cut into thin strips. Toss with salt and pepper and olive oil. Bake about 45 minutes, tossing every 10. In the last 5 minutes, add the cheese, toss to coat, and cook until crispy.
You know what's a good idea? Eating these with homemade ranch dressing. But you know, that's totally up to you.