Heat two tablespoons of olive oil in a heavy large pot over medium heat. Add the garlic and saute until fragrant, about 15 seconds. Add the escarole and saute until wilted, about two minutes. Add a pinch of salt. Add the chicken , beans, and Parmesan cheese. Cover and simmer until the beans are heated through, about five minutes. Season with salt and pepper, to taste.
Ladle the soup into six bowls. Drizzle one teaspoon extra-virgin olive oil over each. Serve with crusty bread.