I usually go ahead and bake the chicken in butter, salt and Italian seasoning first - gives it more taste, but definitely adds fat! You can, of course, just add the chicken in and let it cook with the soup.
Bring chicken broth and water (until pot is over half full) to a boil. Add all other ingredients except pre-baked chicken and noodles.
Cover and simmer for about an hour.
Add chicken, simmer for another half an hour.
Add noodles, cook until noodles are done.
Depending on how soupy you want it, you may need to add water after you add the noodles.