Kosher salt and freshly ground pepper, to taste
2 lb. fava beans in their pods, shelled
2 stalks green garlic
4 boneless, skinless chicken breast halves, each about 6 oz.
2 Tbs. extra-virgin olive oil
2 Tbs. unsalted butter
1/4 cup dry white wine or vermouth
3/4 cup low-sodium chicken broth