(BROTH) In a medium pot, heat the oil over medium high heat until hot. Stir in the onion, carrots, celery, garlic, 3/4 teaspoon salt and 1/2 teaspoon pepper and cook, stirring occasionally, until the vegetables are browned. Stir in the chicken broth and chicken breast and bring to a simmer. Simmer the soup 15 minutes, then stir in the noodles and simmer until the noodles are tender.