ADDISON, Texas--(BUSINESS WIRE)--Fiesta Restaurant Group, Inc. (Nasdaq: FRGI), which operates the fast-casual dining chains Taco Cabana®, Pollo Tropical® and Cabana Grill®, has promoted IT veteran Ryan Nowlin to vice president – information technology. Nowlin, who joined Fiesta as director of IT systems in 2012 and was named senior director of IT in 2014, is responsible for the company’s entire IT structure. Key accomplishments during his tenure include redesigning Pollo Tropical’s website with