In a large bowl, mix sausage, pepper, eggs, breadcrumbs, parsley, and basil.
Form 3 cm (1 ¼ inch) sausage balls (approximately 28.5 g/1 oz) and place on a baking sheet. Lightly spray or brush a little olive oil on each meatball, then reshape with your hands to ensure the oil coats the entire ball. (The olive oil is optional but helps create a crispier golden exterior)
Preheat air fryer to oven to 400°F.
Bake in batches for 8 minutes at 400°F, shaking the meatballs halfway through.