1. Preheat oven to 275°F.
2. Remove stalks and ribs from kale. Rinse and dry leaves.
3. Toss leaves in a large bowl with olive oil. Sprinkle leaves with sea salt and ground pepper.
4. Arrange leaves in a single layer onto a baking sheet.
5. Back for approximately 30 minutes or until crisp.
6. Transfer and let cool onto a wire rack or paper towels.