01 - Preheat the air fryer to 350°F for 3 minutes.
02 - Peel the bananas and slice them into 1/8-inch thick rounds using a sharp knife or mandoline.
03 - Gently toss the banana slices in a mixing bowl with melted coconut oil until evenly coated.
04 - In a separate small bowl, combine granulated sugar, ground cinnamon, and a pinch of salt.
05 - Sprinkle half the cinnamon sugar mixture over the banana slices and toss gently for uniform coverage.
06 - Place banana slices in a single layer in the air fryer basket, ensuring slices do not overlap. Work in batches if necessary.
07 - Air fry for 12 to 15 minutes, flipping the slices halfway through, until golden and crisp. Monitor closely as cooking times may vary.
08 - Immediately after air frying, toss the warm banana chips with the remaining cinnamon sugar mixture.
09 - Allow chips to cool completely for maximum crispness before serving.