Pat the salmon fillets dry with paper towels to remove excess moisture, ensuring the skin gets crispy.
In a small bowl, mix the chili powder and salt together to create a flavorful rub.
Rub the chili mixture evenly over the flesh side of each salmon fillet, pressing lightly to help it stick.
Lightly brush the skin of each fillet with oil; this promotes crispness and helps the spices adhere.
Preheat your air fryer to 400°F (200°C) and let it warm for about 3-5 minutes.
Place the salmon fillets skin-side down in the air fryer basket, ensuring they aren’t touching for even cooking.
Cook the salmon for 10-12 minutes, listening for that satisfying crackle and watching the skin turn deep golden and crispy.
Use tongs to carefully remove the fillets from the air fryer and transfer to a plate.
Squeeze fresh lemon or lime over the hot fillets to brighten the flavors and serve immediately.
Enjoy the crispy-skinned, smoky, spicy salmon with your favorite sides.