“Southern Charm” stars Madison LeCroy and Craig Conover join Kristen Kish in the Top Chef kitchen for a Quickfire inspired by Cracker Barrel’s all-day menu. The chefs must split into teams of three and prepare three meals – breakfast, lunch and dinner, each inspired by southern classics. Later, actress and guest judge Melissa Benoist joins a regal celebration in honor of Queen Charlotte’s birthday and the 20th anniversary of “Top Chef,” tasking the chefs with creating a dessert for the judges along with 60 superfans.