Wash and thoroughly dry kale leaves. Kale bunches vary in size, so carefully measure the leaves in a large measuring cup. Don’t pack the leaves.
Place in a bowl and drizzle the oil over the leaves. Use your hands to evenly distribute the oil over the leaves. Sprinkle the everything bagel spice mix over the leaves, and toss to coat the leaves. The spice mix is very salty, so use less if you don’t enjoy salty snacks.
Spread the kale leaves into an even layer over in 2 baking sheets (you may have to do this in batches). Bake kale leaves for 20 – 30 minutes. Turn the pans at 10 minutes. Leaves should be darkened, and crisp when you remove from the oven. Cooking time will vary based on your oven.