01 - Peel the bananas and cut them into thin, even slices about 1/8 inch thick for uniform cooking.
02 - In a small bowl, combine the granulated sugar and ground cinnamon until evenly blended.
03 - Brush the banana slices lightly with melted coconut oil on both sides to help the coating adhere.
04 - Sprinkle the cinnamon sugar mixture over both sides of the banana slices, ensuring even coverage.
05 - Place the coated slices in a single layer in the air fryer basket. Work in batches if necessary to avoid overlapping for proper air circulation.
06 - Cook at 350°F for 10-15 minutes, flipping the chips halfway through cooking. Monitor closely during the final minutes to prevent over-browning.
07 - Transfer the chips to a wire rack and let cool completely. The chips will continue to crisp up as they reach room temperature.
08 - Lightly sprinkle with sea salt before serving for a sweet-salty flavor contrast.