Clean out the chicken and pat it dry. Remove any feathers that may be present, as well as the giblets. Preheat your air fryer at 350°F (180°C) for 8 minutes.
Prepare the seasoning; combine the butter, garlic cloves, olive oil, chicken or vegetable stock, salt, paprika, lemon pepper, lemon juice, and herbs.
2 tablespoon unsalted butter, 4 cloves garlic, 2-3 tablespoon olive oil, 2 tablespoon low-sodium chicken or vegetable stock, 1 teaspoon lemon pepper, 1½ tablespoon sweet or smoked ground paprika, 1 tablespoon salt, 3 tablespoon chopped fresh parsley, 1 tablespoon chopped fresh rosemary, 1 teaspoon dried oregano, 1 teaspoon dried thyme , 2 tablespoon fresh lemon juice
Coat the chicken with the prepared seasonings, on the outside, as well as under the skin. Stuff the chicken with the halved lemon pieces and the whole garlic head.
2.7 lbs (1.234 kgs) whole chicken, ½ of a lemon, 1 head of garlic roughly peeled and cut in the middle crosswise
Truss the chicken legs (tie the legs with a kitchen string). Place the chicken with the breast side down inside your air fryer basket and air fry for 30 minutes, then flip.
Coat the chicken on the other side with any remaining seasoning, and air fry for a further 30 minutes. Use an internal read thermometer to check for doneness (it should read at least 165°F or 74°C- see notes).
Let the chicken rest for at least 10-15 minutes before carving. Serve your roast chicken with your favorite side dishes.