This Pioneer Woman Slow Cooker Chicken Tortilla Soup is made with chicken breasts, chili powder, cumin, onion, bell peppers, and tomatoes and takes around 5 hours on high or 8 hours on low to cook and serves an estimated 6 people. Serve your slow cooker chicken tortilla soup with corn muffins, quesadillas, Mixed Bean Salad, and avocado fries.