Preheat your air fryer to 400°F (200°C) to ensure it’s hot and ready for the salmon.
In a small bowl, whisk together honey, Dijon mustard, olive oil, garlic powder, lemon juice, and a pinch of salt and pepper until smooth and glossy.
Pat the salmon fillets dry with paper towels, then season generously with salt and pepper on both sides.
Use a basting brush to coat the top of each fillet with the honey mustard glaze, covering evenly for a sticky, golden coating.
Place the coated salmon fillets skin-side down in the preheated air fryer basket, making sure they aren’t touching to allow air circulation.
Cook for about 8-10 minutes, flipping the fillets halfway through to ensure even cooking and crisping of the skin.
Watch as the skin crackles and turns golden brown, and the flesh becomes opaque and flaky when done.
Remove the salmon from the air fryer, let it rest for a minute to settle the juices, then serve hot, garnished if desired.