Shred or dice the chicken.
Prepare all vegetables by dicing or slicing as indicated in the ingredients list.
In a large pot or Dutch oven, heat the olive oil over medium heat.
Add the onion, carrots, and celery and cook until softened, about 5-7 minutes.
Add the garlic, parsnip, leek and zucchini and cook for another 3-5 minutes.
Pour in the chicken stock and water. Bring to a boil, then reduce heat and simmer for 15-20 minutes, or until the vegetables are tender.
Add the pasta and cook according to package directions.
Stir in the shredded chicken and parsley. Season with salt and pepper to taste.
Serve hot.