Cook the bacon until crispy. Drain on kitchen paper, set aside.
Bring a small pot of water to a boil. Add the jalapenos and continue to boil for 3 minutes or longer. The idea is to soften the flesh, but not so much it collapses. Drain and rinse with cold water.
Wear gloves while preparing the jalapenos. When cool enough to handle, cut a small veritcal slit in the side of the pepper and use your finger or a small spoon to scrape out the seeds and the white membrane. Turn slit side down and allow to drain while making the filling.
Stir the cream cheese and cheddar cheese in a medium bowl. Add the bacon and season to taste.
Portion the cheese mix and fill each jalapeno. Give each a gentle squeeze to close the pepper around the filling. This will help repair any torn jalapenos as well.
Set up a breading station with the eggs, flour and bread crumbs. Dip the jalapenos in the egg, allow the excess to drip off then cover with flour. Dip in the egg once more then follow with the bread crumbs.
Preheat the air fryer to 375°F/190°C and prepare the air fryer rack with cooking spray. Arrange the breaded jalapeno poppers on the rack. Spray each popper with cooking spray.
Air fry for 10 - 12 minutes, turning halfway through. If necessary remove the tray from the air fryer oven and spray with more cooking spray. The poppers are ready when the breading is golden brown and the cheese has melted and softened.
Serve with sour cream and your favorite salsa.