Copycat Chili’s Chicken Enchilada Soup

Name: Copycat Chili’s Chicken Enchilada Soup
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: American
Ingredients: 3 chicken breasts (boneless, skinless); 2 teaspoons kosher salt (divided); ½ teaspoon black pepper; 1 tablespoon vegetable oil; 4 cloves garlic (minced); 1 tablespoon chili powder; 1 tablespoon ground cumin; 1 tablespoon onion powder; 3 - 32 ounce boxes unsalted chicken stock, divided; 1 ¼ cups masa harina (corn flour); 10 ounce can red enchilada sauce; 2 cups shredded Monterey Jack cheese (divided); 2 cups shredded sharp cheddar cheese (divided); Tortilla strips; Fresh chopped cilantro; Sour cream