Preheat oven to 400°F. Line 2 large baking sheets with parchment paper.
In a small bowl, mix the sugar, cinnamon, and salt (if using).
Stir the vanilla into the melted butter. Brush both sides of each tortilla with the butter mixture.
Stack tortillas and cut each into 8 wedges to form chips. Toss wedges in a large bowl with the cinnamon sugar until evenly coated.
Arrange chips in a single layer on prepared sheets. Bake for 10 to 12 minutes, flipping and rotating pans halfway, until crisp and golden.
Cool on the sheet for 5 minutes to finish crisping. Serve warm or at room temperature.
Notes
Air fryer option: Cook coated chips at 375°F for 5 to 6 minutes in batches, shaking halfway. For extra sparkle, dust with a little more cinnamon sugar while warm. Serve with chocolate sauce, dulce de leche, or fruit salsa.