01 - Preheat air fryer to 350°F for 3 minutes.
02 - Peel bananas and cut into 1/8-inch thick rounds using a sharp knife or mandoline.
03 - Place banana slices in a medium mixing bowl and gently toss with melted coconut oil to coat evenly.
04 - In a small bowl, combine granulated sugar, ground cinnamon, and a pinch of salt until fully mixed.
05 - Sprinkle half of the cinnamon sugar mixture over the oiled banana slices and toss to coat thoroughly.
06 - Arrange coated banana slices in a single, non-overlapping layer in the air fryer basket. Work in batches if necessary.
07 - Air fry for 12 to 15 minutes at 350°F, turning slices halfway through until golden and crisp. Monitor closely to avoid burning.
08 - While chips are still warm, immediately toss with remaining cinnamon sugar mixture.
09 - Allow banana chips to cool completely on a rack or tray for maximum crispiness before serving.