Preheat the air fryer to 375°F.
Pat the chicken sausages completely dry with a paper towel and insert a wooden skewer into the end of each sausage.
In a shallow mixing bowl, whisk together the egg and non-fat Greek yogurt until the mixture is smooth and well-combined.
Stir in the yellow cornmeal, baking powder, garlic powder, sea salt, and black pepper to create a thick, cohesive batter.
Transfer the batter into a tall, narrow glass and dip each sausage link into the glass, rotating it to ensure a thick and even coating.
Lightly coat the air fryer basket with the avocado oil to prevent the batter from sticking to the surface.
Carefully place the coated sausages into the air fryer basket, ensuring they are not touching each other to allow for proper airflow.
Air fry for 8 to 10 minutes, turning halfway through the cooking time, until the exterior is firm and develops a beautiful golden-brown color.