Heat oil in a large saucepan over medium-high heat.
Add carrots, onion, celery and celery tops; cook 3 minutes. Add broth; bring to a boil.
Reduce heat; simmer uncovered 8 to 10 minutes or until vegetables are tender.
Stir in noodles; simmer 6 minutes or until noodles are tender. Stir in chicken; heat through.
Season to taste with salt and pepper if desired.