Preheat the oven to 350°F (175°C).
In a small bowl, mix together the sugar, cinnamon, and nutmeg.
Brush both sides of each tortilla lightly with melted butter.
Sprinkle evenly with the cinnamon-sugar mixture.
Cut each tortilla into 8 triangles using a pizza cutter or sharp knife.
Arrange the tortilla triangles in a single layer on a baking sheet.
Bake for about 10 minutes, or until lightly golden and crisp.
Transfer the chips to a wire rack to cool completely. Repeat with the remaining tortillas if needed.