In large stockpot over medium-high heat, saute butter, celery and carrots 3 minutes. Add garlic and cook 30 seconds.
Add chicken stock or broth and season with rosemary, thyme and crushed red pepper. Add salt and pepper, to taste. Taste and add chicken bouillon cubes, if desired, for flavor.
Bring to boil. Add noodles and cook until al dente. Remove from heat once noodles are tender.
Add chicken. Taste and adjust seasoning as desired.