Low-Carb Chicken Fajita Soup Recipe - all the flavors of chicken fajitas in a delicious soup! You’ll never miss the carbs! This soup is delicious! Chicken, cream cheese, fajita seasoning, Ro-tel, onion, bell pepper, chili powder, cilantro, and chicken broth. Cook all day in the slow cooker. Top your bowl of soup with your favorite taco toppings.