Position oven racks in top and bottom thirds of oven. Preheat to 375F. Spray 2 baking sheets with oil. Place 2 tortillas on each sheet.
Whisk egg white in a small bowl. Brush tortillas with egg white, then sprinkle with spices and pepitas, pressing gently so pepitas stick. Cut each tortilla into 6 long strips, then separate the pieces so they do not touch.
Bake in top and bottom thirds of oven until golden, switching sheets halfway through, 8 to 10 min.