Place kale in a large bowl and add 2 tablespoons oil. Massage kale with olive oil, making sure to cover each leaf with oil. Place kale onto 2 baking sheets with leaves not overlapping. Sprinkle kale on each baking sheet with ½ teaspoon sea salt. Bake in a 350° oven for 7 minutes then switch baking sheets from the top rack to the bottom rack. Continue baking for an additional 7 minutes. Cool and enjoy! For extra flavor, sprinkle with a little finely grated Parmesan cheese before they are baked.