 DALLAS--BUSINESS WIRE--Fiesta Restaurant Group, Inc. Fiesta or the Company NASDAQ: FRGI, parent company of the Pollo Tropical and Taco Cabana fast-casual restaurant brands, today announced that it will host a conference call to review first quarter fiscal 2021 results on Thursday, May 13, 2021 at 4:30 P.M. ET. A press release containing first quarter fiscal 2021 results will be issued after market close that same day. The conference call can be accessed live over the phone by dialin 