The Slice Shop, a new pizzeria concept developed by Guercio, is getting great traction in Naples and earning some new buzz with its legit New York-style pizza. Slice Shop has over 25 varieties of pizza, such as Margherita, Sicilian-style pies, and artisanal pies. One of the signature pizzas at Slice Shop is The Portnoy, which has a very thin, crispy crust topped with mozzarella, basil, and extra virgin olive oil. The Portnoy pizza was rated 7.9 by Barstool Sports founder and traditional cheese pizza reviewer, Dave Portnoy…