Prep the air fryer and molds. Preheat your air fryer to 300°F (150°C). Lightly spritz your silicone molds with nonstick spray. This helps the bites release cleanly.
Separate yolks and whites. Slice the hard-boiled eggs in half. Gently pop the yolks into a mixing bowl. Set the whites aside.
Make the filling. Mash the yolks with mayonnaise, Dijon, vinegar, a shake of paprika, and a pinch each of garlic and onion powder. Season with salt and pepper. Stir until smooth and creamy. Adjust mayo or vinegar for texture and tang.
Chop some whites for body. Finely dice 2–3 egg white halves and fold them into the yolk mixture for a heartier bite. Add chives and any optional mix-ins you like (relish, bacon, jalapeño, or a dash of hot sauce).
Assemble the bites. Spoon the filling into the molds, filling each cup about 3/4 full. From the remaining egg whites, punch or cut small rounds or strips and gently press one piece onto the top of each cup. This creates a classic deviled-egg look and a nice set surface.
Air fry. Place the filled mold in the air fryer basket. Cook at 300°F for 8–10 minutes, until the bites are set in the center and lightly firm to the touch. Avoid overcooking; they should be tender, not dry.
Cool briefly. Let the mold rest for 5 minutes before unmolding. This helps the bites firm up so they don’t break.
Garnish. Dust with paprika and sprinkle with extra chives. Add a tiny dot of Dijon or a few grains of flaky salt if you like a punchy finish.
Serve warm or chilled. They’re excellent warm out of the air fryer and just as tasty cold from the fridge.