1. Preheat oven to 400 degrees. Arrange tortillas on a rimmed baking
sheet. Sprinkle cheese evenly over tortillas; bake until golden brown,
8 to 10 minutes.
2. Meanwhile, in a medium bowl, toss together chicken, salsa, 1/4
cup cilantro, and cumin. Spoon mixture evenly over tortillas; bake
until heated through, about 8 minutes.
3. Top with lettuce, tomato, and sour cream. Sprinkle with remaining
cilantro. Serve immediately, with additional green salsa, if desired.