Thaw and dry: Place frozen shrimp in a sealed zip-top bag and submerge in cold water for 10–15 minutes until thawed. Pat very dry with paper towels.
Season: Toss shrimp with olive oil and taco seasoning until evenly coated.
Air fry: Preheat air fryer to 400°F (200°C). Arrange shrimp in a single layer (cook in 2 batches if needed). Cook 6–8 minutes, shaking the basket halfway, until shrimp are opaque, pink, and curled into a loose "C" (internal temp 120°F).
Make the sauce: While shrimp cook, whisk together sour cream, mayonnaise, lime juice, garlic powder, salt, and hot sauce.
Warm tortillas: Heat tortillas in a dry skillet, microwave, or over a flame until soft and pliable.
Assemble: Layer cabbage in each tortilla, top with shrimp, tomatoes, avocado, and cheese, then drizzle with lime sauce. Serve immediately with lime wedges.