- Preheat oven to 350 degrees. 
- (Optional) With a knife, separate leaves from the thick ribs, and discard ribs. 
- Cut or tear the kale leaves into your desired size of chips - note that they will shrink while baking so do not cut them too small. 
- Combine the kale leaves, oil and 1/4 teaspoon of sea salt in a large bowl. Use your hands to toss, evenly coating the leaves with oil. 
- Spread out the kale in a single layer on a parchment-covered baking sheet (or two). Sprinkle remaining salt and pepper over the leaves. 
- Bake for 3 minutes on upper rack in oven and then move the sheet to the lower rack for 3-4 more minutes, or until the kale is crunchy and no longer soft. Do not overcook as the leaves can shrink and become too fragile. 
- Remove and serve hot immediately, or store in a sealed container for up to 1 week. 
- Experiment with your favorite seasonings such as cayenne pepper, crushed red pepper, paprika, garlic, and even coat with oil, vinegar and salt for salt & vinegar kale chips!