1 tablespoon olive oil
2 skinless, boneless chicken breast halves, chopped into bite-size pieces
1 teaspoon chili powder
½ teaspoon ground cumin
1 clove garlic, minced
Pinch cayenne pepper
3 ounces cream cheese, softened
½ cup shredded sharp cheddar cheese (2 ounces)
¼ cup sour cream or Greek yogurt
1 (10- or 14-ounce) can diced tomatoes and green chiles, drained
1/4 cup thinly sliced green onions
2 tablespoons minced fresh cilantro
6 8-inch flour tortillas
Green leaf lettuce
Avocado and/or tomato slices, optional