In a small bowl, whisk together the Dijon mustard, honey, olive oil, garlic powder, paprika, salt, and black pepper until smooth. Taste and adjust sweetness or tanginess if needed.

Pat the salmon fillets dry with a paper towel (this helps the glaze stick better). Brush the honey mustard mixture evenly over the top and sides of each fillet.

Set your air fryer to 390°F (200°C) and let it heat up for 2-3 minutes. Preheating ensures even cooking and a nicely crisped exterior.

Place the salmon fillets in the air fryer basket, skin-side down if they have skin. Air fry for 8-10 minutes, depending on thickness. The salmon is done when it flakes easily with a fork and reaches an internal temperature of 145°F (63°C).

Let the salmon rest for 2 minutes before serving. This allows the juices to redistribute, keeping it moist. Garnish with fresh herbs like dill or parsley if desired.