Generously spray air fryer basket with cooking spray.
Allow air fryer to heat for about 5 minutes at 350 degrees F. Slice each piece of bread into four sticks by cutting in half vertically, then horizontally.
In a medium size bowl, combine eggs, milk, vanilla extract, and ¼ teaspoon cinnamon. Whisk together until well blended.
In a small bowl, combine sugar and remaining 1 teaspoon cinnamon to make cinnamon-sugar mixture.
Working in batches of 6, dunk bread sticks into egg mixture, soaking for about 10 seconds on each side, making sure bread is coated on both sides.
Sprinkle each side with cinnamon sugar mixture and place sticks in the air fryer, leaving space in between sticks.
Cook 4 minutes, flip ,then cook another 4 minutes.
Serve with syrup, confectioners' sugar, or whipped cream.