De-stalk the kale and spread large kale pieces out on a baking sheet then brush generously with olive oil on each side. Sprinkle a teaspoon of sea salt evenly across the kale.
Bake at 425 degrees F for approximately 5 minutes—the kale should turn a little brown. Turn over each piece of kale and bake until light brown.
Evenly sprinkle a half-cup of fresh mozzarella cheese across the baking sheet and bake 1 or 2 minutes until cheese is melted.