Prepare the jalapeños by slicing them lengthwise and carefully removing the seeds and membranes with a small spoon. For milder poppers, make sure to remove all white pith. Wear gloves if you have sensitive skin!
Make the filling by mixing the softened cream cheese, shredded cheddar, green onions, garlic powder, smoked paprika, salt and pepper in a bowl until well combined.
Fill each jalapeño half with the cheese mixture using a spoon, making sure not to overfill – leave a little room at the top to prevent melting cheese from escaping.
Prepare your dredging station by placing the beaten egg in one shallow dish and the panko breadcrumbs in another.
Dip each filled jalapeño first into the egg wash, ensuring the cheese side gets coated, then press into the panko, ensuring good coverage on the cheese filling.
Preheat your air fryer to 375°F (190°C) for 3 minutes.
Spray the air fryer basket lightly with cooking spray, then arrange the jalapeño poppers in a single layer, cheese side up.
Lightly spray the tops of the poppers with cooking spray to help them become golden brown.
Air fry for 8-10 minutes until the poppers are golden brown and the cheese is bubbly. No need to flip them!
Allow to cool slightly for 2-3 minutes before serving to avoid burning your mouth on the hot filling.