Mix the xylitol and cinnamon in a shallow bowl and set aside.
In a large bowl, toss the avocado oil with the potato slices. Sprinkle on the salt, then toss again.
Sprinkle over the cinnamon-xylitol mixture and give it one more toss.
Place an optional (but highly recommended) silicon tray in an air fryer. If you don't have one, lay out parchment paper (with some additional pieces hanging a bit off the side to be able to pull the fries out later). Evenly spread the sweet potato fries on the tray. Do not overcrowd it - you may have to repeat this, depending on the size of your air fryer. You can also bake it.
Air fry at 425 degrees F for 16-18 minutes, flipping the pieces halfway through the time.
A few minute before the fries are done, boil water in a stovetop pot.
Once boiling, remove from the heat. Place a bowl larger than the pot over top, then add in the chocolate.
Stir with a spatula to gently melt the chocolate.
Once the fries are done, remove them from the air fryer and set the silicon tray or parchment paper on a heat proof surface.
Use a butter knife to drizzle the melted chocolate over the fries.
They will be very hot, so wait for them to cool just a bit before eating. Then enjoy hot and fresh!