If your skin is sensitive to chili, please wear gloves while you’re handling the jalapenos! Also, be sure not to rub your eyes for a while after preparing the poppers. Washing your hands with dish soap will help remove the chili oil, but it can easily stay on your hands for hours after handling the peppers.
I’m using thick cut bacon from Costco, which is very long. If you’re using bacon slices that are a more average length, use 6 - 8 depending on your preference.
I tested this in two air fryers. In the Ninja air fryer the cooking time was 6 - 8 minutes, depending on how soft you like your poppers (5 minutes if you want them firm and spicy). In the T-fal air fryer the cooking time was 8 - 10 minutes, depending on how soft you like your poppers (6 minutes if you want them firm and spicy).