Preheat your air fryer to 375°F (190°C) for approximately 3 minutes.
In a mixing bowl, toss the trimmed green beans with olive oil, kosher salt, and garlic powder until well coated.
Place the seasoned green beans in the preheated air fryer basket and cook for 5 minutes.
After 5 minutes, shake the basket and add the sliced smoked chicken sausage. Cook for an additional 4-5 minutes until the green beans are tender and slightly browned.