A lightly flavored chicken broth with chunks of avocado, tomato and onion, chicken avocado soup is the perfect springtime or summer entree. In mexico, chicken soups such as this one are eaten year-round in small portions as a first course or in large bowls as the main dish of a meal, with fresh lime juice squeezed into the broth right before eating. The shredded chicken adds a hearty texture to this otherwise very light soup that is easily made in one pot.