1. Preheat oven to 350 degrees F.
2. Cut each tortilla into eight wedges and arrange in a single layer on a cookie sheet.
3. Whisk together oil and lime juice and brush lightly over tortilla wedges.
4. Combine the cumin, chili powder, and salt. Sprinkle on wedges.
5. Bake until crisp and brown, flipping once about halfway through (12-15 minutes).