Preheat the air fryer to 350°F. Toast the hazelnuts for 10 Minutes, or until golden and fragrant.
Working in batches, rub a handful of hazelnuts in the middle of a kitchen towel to remove the brown skins. Do not worry about perfection; lingering skins can get blitzed.
Pour all the toasted hazelnuts into a food processor and blend until a smooth nut butter is formed, about 5-8 Minutes.
With the blender on low, slowly incorporate the coconut oil, cocoa powder, and powdered sugar until smooth, about 1 Minute. Then blend the chocolate chips, about 5 additional Minutes. Add salt to taste.
Pour the copycat Nutella into a jar and refrigerate until ready to use. Enjoy!