Preheat oven to 275 degrees F.
Remove any tough stems from the kale, and cut the leaves into pieces about 2-3 inches long and wide. Mist lightly but thoroughly with olive oil, and then sprinkle with kosher salt and freshly-ground pepper to taste. (If you don’t have a mister or spray-type olive oil, drizzle with a tablespoon or two of oil and toss well to coat the leaves evenly.)
Spread pieces out on a lightly-greased baking sheet with sides. Bake for 15-20 minutes. Check the kale, and if it is not throughly crisp, bake for a few more minutes or until the pieces are evenly crispy. Enjoy!