Pat the salmon fillets dry with paper towels to remove excess moisture, helping the skin crisp up.
In a small bowl, mix the chili powder, garlic powder, salt, and pepper to create a flavorful spice blend.
Using a basting brush, coat the skin side of each salmon fillet evenly with olive oil, then rub the chili spice mixture onto the flesh side for flavor.
Preheat the air fryer to 400°F (200°C) for about 3 minutes. Carefully place the salmon fillets skin-side down in the basket, ensuring they aren’t overcrowded.
Cook the salmon for 8–10 minutes, listening for the satisfying crackle of the skin as it crisps up. Check the skin for golden brown color near the 8-minute mark.
Once cooked, carefully flip the fillets and cook for an additional 1–2 minutes to ensure even crispness and finish cooking the flesh through.
Remove the salmon from the air fryer and immediately squeeze fresh lemon juice over the top for a bright, zesty finish.
Garnish with chopped cilantro or parsley if desired, adding a fresh, herbal note to the rich, smoky fish.
Serve the crispy-skinned salmon hot, enjoying the contrast of tender flesh and crunchy skin with a flavorful chili kick.