1Preheat the air fryer to 180°C (350°F) for 5 minutes.
2Slice each chicken breast horizontally to make 4 thin cutlets. Season both sides with salt and pepper.
3In a shallow dish, mix flour with a pinch of salt and pepper. Lightly dredge each cutlet in the flour, shaking off excess.
4Lightly brush the cutlets with olive oil (or spray with oil). Place them in a single layer in the air fryer basket. Cook at 180°C (350°F) for 10-12 minutes, flipping halfway, until golden and cooked through.
5Meanwhile, prepare the sauce: in a small skillet, melt butter over medium heat. Add lemon juice, chicken broth, and capers. Bring to a gentle boil, then reduce heat and simmer for 2-3 minutes until slightly reduced.
6Stir in fresh parsley. Serve the chicken hot, drizzled with the piccata sauce.