Season chicken wings with salt, cover, and chill in the fridge for at least 8 hours and up to 1 day. Air fry the wings in batches (about 6 at a time) at 425 degrees Fahrenheit for 25 minutes.

Cut the chicken wings into three sections and discard the tips. Use a kitchen towel to dry the wings. Pop the wings into a bowl and sprinkle over the baking powder and the potato starch or cornflour.