Preheat your air fryer to 380°F (193°C) for about 5 minutes.

Peel the sweet potatoes and cut them into thin fries, approximately 1/4-inch thick.

Place the sweet potato fries in a large bowl and drizzle them with avocado oil. Toss well to ensure all the fries are evenly coated.

Sprinkle salt and black pepper over the oiled sweet potato fries, tossing again to evenly distribute the seasonings.

Carefully transfer the seasoned sweet potato fries to the preheated air fryer basket in a single layer, ensuring they are not overcrowded.

Cook the fries in the air fryer at 380°F (193°C) for 18-20 minutes, shaking the basket every 5-7 minutes to ensure even cooking and prevent sticking. The sweet potato fries should be crispy and golden brown.

Once cooked, remove the sweet potato fries from the air fryer and serve immediately.