Season ground beef with salt and divide it into 4 equal portions.

Flatten each portion and wrap around a hard-boiled egg, fully encasing it.

Wrap 2 slices of bacon around each meatball, ensuring the ends overlap slightly. Ensure each meatball is securely wrapped to prevent the bacon from unwrapping during cooking.

Preheat the air fryer to 180°C (356°F). Place the bacon-wrapped meatballs in the basket, not touching.

Air fry for 20 minutes or until the bacon is crispy and the beef is cooked.