Chicken fajitas are a Tex-Mex favorite that are easy to make and packed with flavor. Thinly sliced chicken breast is marinated in a mixture of lime juice, garlic, and spices, then sautéed with onions and bell peppers until tender. The fajitas are traditionally served with warm tortillas, sour cream, guacamole, and salsa. Customize your fajitas with your favorite toppings, such as shredded cheese, diced tomatoes, or jalapeños.