Halve jalapeños lengthways. Leave stem attached. Scoop out all seeds and membrane with a small spoon.
Brush jalapeño halves lightly with olive oil. Season with a pinch of salt.
Beat softened cream cheese until smooth. Add cheddar, chives, and all filling seasonings. Mix until fully combined. Taste and adjust.
Combine panko, Parmesan, oil, and breadcrumb seasonings in a small bowl. Stir until breadcrumbs are evenly coated.
Fill each jalapeño half generously with cream cheese mixture. Mound slightly above the rim.
Press a generous pinch of breadcrumb topping firmly over each filled jalapeño.
Preheat air fryer to 190°C (375°F) for 3 minutes if required.
Arrange poppers in a single layer in the air fryer basket. Do not overlap. Work in batches.
Air fry at 190°C (375°F) for 8 to 10 minutes until topping is golden and filling is bubbling.
Rest for 2 to 3 minutes before serving.
Garnish with fresh chives or spring onions.
Serve with sour cream or ranch dressing and hot sauce on the side.