Preheat the oven to 350°F and line a rimmed baking sheet with parchment paper.
In a small bowl, mix together the sugar, Harissa, and salt until well combined.
Lay the slices flat on the parchment, without overlapping. Brush each slice with a little EVOO and sprinkle the spice mixture over the top.
Bake the prosciutto slices for 10-12 minutes until they begin to get crispy and caramelized. Bake for longer if the slices are thicker.
Remove from the oven and transfer to a wire rack to cool. Enjoy right away, or store at room temperature for a few hours.
