Preheat your air fryer to 400°F (200°C) for about 3 minutes; this ensures even cooking and crisp skin.
Pat the salmon fillets dry with paper towels to remove excess moisture, which helps achieve crispy skin.
Lightly brush the skin of each fillet with olive oil using a basting brush; this promotes browning and crispiness.
Sprinkle salt and pepper evenly over the fillets, seasoning the skin and flesh for flavor.
Gently place the salmon fillets skin-side down into the hot air fryer basket, being careful to avoid splattering.
Cook for 8-10 minutes, or until the skin is golden and crispy, and the flesh flakes easily with a fork.
Meanwhile, mix the Greek yogurt with lemon juice and chopped herbs in a small bowl to make the cooling sauce.
Once cooked, carefully lift the salmon out with a spatula, revealing the crackling skin and flaky flesh.
Squeeze additional lemon over the hot salmon for brightness and serve immediately with the yogurt sauce on the side.