Olive oil (extra virgin?)
Optional seasonings: garlic, parmesan cheese, any cheese, nutritional yeast (don't know about this one, other people like it)
Make sure they are dry. If they have been sprayed in the grocery store, leave them in the oven on "warm" until they are dry.
Preheat oven to 375 degrees
Spray (seriously get an oil sprayer) the leaves with oil, sprinkle with sea salt and grind on the black pepper (or lemon pepper seasoning). Toss to coat
Just before you're ready to call it a day, take the chips out of the oven and sprinkle with cheese (if you're using it).
Crunch and enjoy. This is probably the healthiest snack I've ever made.