Pat the salmon fillets dry with paper towels to remove excess moisture, especially on the skin. This helps achieve a crispy finish.
Brush each fillet lightly with olive oil using a basting brush, coating the skin evenly to promote crisping.
Season the fillets generously with salt, pepper, and garlic powder, ensuring the seasoning covers all sides for flavor.
Place the seasoned fillets skin-side down in the air fryer basket, making sure they aren’t touching to allow even air circulation.
Set the air fryer to 390°F (200°C) and cook for about 10-12 minutes. The skin will crackle and turn a golden brown while the flesh becomes opaque and flaky.
Once cooked, carefully remove the salmon from the air fryer and let it rest for a minute. Squeeze fresh lemon slices over the top for brightness.
Garnish with chopped dill or parsley if desired, and serve immediately with additional lemon wedges on the side.