1 bunch kale, rinsed and dried well (about 10 ounces)
Nonstick cooking spray
1/2 teaspoon kosher salt
Any seasonings you like; blended spice mixture, crushed red pepper, onion powder, seasoning salt, Parmesan cheese, minced garlic, etc.
Preheat oven to 250 degrees. Remove and discard the thick stems of the kale and tear the leaves into large pieces. Spread kale in a single layer on 2 large cookie sheets. Spray leaves with nonstick cooking spray to coat lightly. Sprinkle with salt and any seasoning of your choice. Bake just until the kale chips are crisp but not browned, 20-35 minutes. Cool.