Step 1

Toss cabbage, cilantro, scallion, 2 tablespoons lime juice and avocado oil together in a medium bowl; set aside.

Step 2

Cut avocado in half lengthwise; using a spoon, scoop the pulp into the bowl of a mini food processor. Add sour cream, garlic, salt and the remaining 3 tablespoons lime juice; process until smooth, about 30 seconds. (Alternatively, mash with a fork to reach desired consistency.) Set aside.

Step 3

Preheat air fryer to 400°F. Place egg white in a shallow dish; whisk until frothy. Combine breadcrumbs and chili powder in a separate shallow dish. Pat fish dry with a paper towel. Coat the fish with egg white, letting excess drip off; dredge in the breadcrumb mixture, pressing to adhere.

Step 4

Working in batches if needed, arrange the fish in an even layer in the fryer basket; coat the fish well with cooking spray. Cook until crispy and golden on one side, about 3 minutes. Flip the fish; coat with cooking spray and cook until it's crispy and flakes easily, about 3 minutes. Flake the fish into bite-size pieces. Top each tortilla evenly with fish, avocado crema (about 1 tablespoon each), cabbage slaw (about 1/4 cup each) and tomato. Serve with lime wedges, if desired.