4. Stephanie Izard
Season 4 winner, Stephanie Izard already had her own restaurant named Scylla before appearing on the show. She closed the restaurant in 2007 and entered the show in 2008. After she had won the contest, she opened three restaurants: Girl & the Goat, Little Goat Diner, and Duck Duck Goat. She won several awards, including Beard award for Best Chef in 2013.