01 - Set air fryer to 350°F and allow to preheat for 3 minutes.
02 - Peel bananas and slice into 1/8-inch thick rounds using a sharp knife or mandoline.
03 - Place banana slices in a bowl and gently toss with melted coconut oil until evenly coated.
04 - In a separate bowl, combine granulated sugar, ground cinnamon, and a pinch of salt.
05 - Sprinkle half of the cinnamon sugar mixture over the banana slices and toss to distribute evenly.
06 - Place banana slices in a single, non-overlapping layer in the air fryer basket. Work in batches if necessary.
07 - Cook for 12 to 15 minutes, flipping the slices halfway, until golden and crisp. Monitor closely to avoid burning.
08 - While chips are still warm, toss with the remaining cinnamon sugar mixture.
09 - Allow banana chips to cool completely to achieve optimal crispiness before serving.