1. Warm the olive oil in a large Dutch oven over medium heat. Stir in the carrots, onion, garlic and pinch of salt. Saute until onion is translucent, about 5 minutes. Add the tomato paste and chile flakes; stir 1 minute. Mix in the escarole.
2. Add the chicken stock and water to the pot; bring to a boil. Add the pasta and simmer 5 minutes. Add the meatballs and beans and simmer 8 minutes or until meatballs are heated through. Mix in the lemon juice, black pepper and remaining salt. Ladle into bowls; top with the Parmesan before serving.