01 - Preheat your oven to 300°F (150°C). Line two baking sheets with parchment paper for easy cleanup.
02 - Thoroughly wash the kale leaves. Ensure they are completely dry, using a salad spinner or paper towels, as any residual moisture will prevent them from becoming crispy.
03 - Transfer the dried kale pieces to a large mixing bowl. Drizzle with olive oil and sprinkle with sea salt. Gently massage the kale with your hands to ensure each leaf is evenly coated.
04 - Spread the seasoned kale in a single layer across the prepared baking sheets, ensuring none of the leaves overlap to promote even crisping.
05 - Bake for 10 minutes. Rotate the baking sheets, then continue to bake for an additional 5 to 8 minutes, closely monitoring to prevent burning. The kale chips are ready when they are crisp and show light browning at the edges.
06 - Remove the crispy kale chips from the oven and allow them to cool on the baking sheets for a few minutes before serving. They will crisp up further as they cool.