Preheat oven to 375°.
Stack tortillas on top of each other.
Using kitchen shears, cut them in half, then into quarters, and then into eights. Place the cut-up tortillas into a large bowl, separating them so they don't stick together.
Pour in melted butter and gently toss so that the butter covers all pieces.
Whisk together the cinnamon and sugar.
Pour the cinnamon sugar over the buttered tortillas.
Use your hand to toss them to cover each piece with cinnamon sugar.
Place the tortillas on a parchment paper-covered cookie sheet so they are not touching.
Bake for 10 minutes, flip them over, and bake for another 7-10 minutes or until crispy. *Watch them carefully so that they do not burn.
The chips will become even crisper once they have cooled.
Cool for 30 minutes at room temperature before serving.