Preheat the air fryer to 400°F (200°C) for 5 minutes.
Pat the salmon fillets dry with paper towels.
Brush both sides of the salmon fillets with olive oil.
Season the salmon fillets evenly with salt and black pepper.
Place the salmon fillets skin-side down in the air fryer basket, ensuring they do not overlap.
Cook the salmon in the air fryer at 400°F (200°C) for 10 to 12 minutes, or until the salmon flakes easily with a fork.
While the salmon cooks, melt the butter in a small saucepan over medium heat.
Add the minced garlic to the melted butter and sauté for 1 to 2 minutes until fragrant, stirring frequently to avoid burning.
Remove the saucepan from heat and stir in the fresh lemon juice and chopped parsley.
Once the salmon is cooked, transfer the fillets to serving plates.
Spoon the garlic butter sauce evenly over each salmon fillet.
Serve immediately.