(TrendHunter.com) Panera recently expanded its popular Flatbread Pizza lineup with the debut of a meaty new creation dubbed the Sausage & Pepperoni Flatbread Pizza. The new option joins the chain's other... (TrendHunter.com) Panera recently expanded its popular Flatbread Pizza lineup with the debut of a meaty new creation dubbed the Sausage & Pepperoni Flatbread Pizza. The new option joins the chain's other...