Cut chicken breasts into 1-inch chunks, season with salt and pepper; set aside
In Enameled Cast Iron Dutch Oven, heat the olive oil over medium heat. Add the onions and cook until softened, about 4 minutes. Add the diced chicken to the pan and cook until brown on both sides. Stir in the garlic and cook additional 1-2 minutes.
Add the chicken broth, water, uncooked pasta, broccoli, red bell pepper, carrots and peas. Stir and bring to boil.
Reduce heat to low and simmer covered for 20 minutes.
Uncover and cook until most of the liquid is absorbed.
Remove from heat. Stir in cream cheese, mozzarella cheese and parmesan cheese. Stir to combine. Divide equally into 4 bowls and garnish with parsley.