Heat the oil and butter in a large pot over medium heat.
Add the onion, chili, and bay leaf. Saute for a few minutes.
Add the garlic and saute for a further 30 seconds.
Add the carrots, celery, capsicum and leek.
Season with salt, black pepper and mixed herbs.
Add chicken stock and canned tomatoes.
Once the vegetables are tender, add the pasta till al-dente.
Add the white beans and sweet peas.
Mix in chili flakes and parmesan and top with parsley. Add more salt if required.
Serve in bowls. Top with more parmesan if preferred.