1Remove duck breast from refrigerator 15 minutes before cooking. Pat very dry with paper towels.
2Score the skin in a crosshatch pattern, being careful not to cut into the meat. This helps render fat and makes skin crispy.
3Season generously on both sides with salt, pepper, and optionally garlic powder and thyme.
4Preheat air fryer to 190°C (375°F) for 3-5 minutes.
5Place duck breast in basket, skin side up. Cook for 15-20 minutes, turning pieces halfway (after turning, skin side should be down).
6Check internal temperature: 57°C (135°F) for medium-rare, 60-63°C (140-145°F) for medium.
7Remove from air fryer and let rest 5-10 minutes before slicing thinly, across the grain.
8Optionally, drizzle with honey or balsamic reduction before serving.