For extra flavor, try adding a pinch of red pepper flakes to the pecan mixture for a subtle kick. Ensure the trout fillets are patted dry before coating to help the pecan crust adhere better. Cooking times may vary depending on your air fryer model, so keep a close eye on the fish during cooking. Serve immediately to enjoy the crispiness of the pecan crust. Pairs well with roasted asparagus or a simple green salad.