Drizzle olive oil over the kale in a large bowl and sprinkle with salt. Stir with your hands to coat kale.
Spread kale onto baking sheets.
Bake in preheated oven for 10 minutes or until kale begins to get slightly crisp; sprinkle a light layer of cheddar cheese and rotate racks and flip the chips, continue baking for another 10-15 minutes or until completely crisp, 20 to 25 minutes total.
Be sure to keep an eye on them to make sure they don't burn; if you notice certain chips ready much sooner than others, take them out. Store in an airtight container for up to a week.