Michael Nuzzo and his two older brothers learned from their father, Fred, the intracacies -- and hard work -- involved in making Italian pies at the New Haven pizzeria he started in 1955. All three eventually started their own restaurants. Today, a third generation of Nuzzos, Michael's three children -- ages 13, 11 and 8 -- for years have spent Friday nights and Saturdays learning the business at their father's Grand Apizza restaurant in Clinton. That is until two weeks ago, when a Connecticut Labor Department investigator -- apparently acting on an anonymous tip -- showed up May 12 at...