Prep time: 10 minutes
Cook time: 8-10 minutes
2 (8-ounce) skinless, boneless chicken breasts
1 teaspoon olive oil
1/2 teaspoon chipotle chile powder
1/2 teaspoon salt
6 (1 1/2-ounce) slices California cotija cheese
1/4 cup tomatillo salsa
6 (3-inch) round rolls, split and toasted
