Slice each jalapeño in half lengthwise. Remove seeds and membranes for less heat.
In a bowl, mix the softened cream cheese and shredded cheddar until smooth and well combined.
Fill each jalapeño half with the cheese mixture. Press it in slightly so it stays in place.
Wrap each stuffed jalapeño with a slice of bacon. Secure with a toothpick if needed.
Preheat the air fryer to 375°F (190°C) for 2 minutes.
Place the poppers in the basket in a single layer, leaving space between each one.
Air fry at 375°F (190°C) for 10 minutes, then flip.
Continue cooking at 375°F (190°C) for 3–5 more minutes, until the bacon is crispy and the filling is heated through.
Remove carefully and let cool for a few minutes before serving.