 DALLAS--BUSINESS WIRE--Fiesta Restaurant Group, Inc. Fiesta or the Company NASDAQ: FRGI, parent company of the Pollo Tropical and Taco Cabana restaurant brands, today reported comparable restaurant sales for the 14-week fiscal fourth quarter 2020 ended January 3, 2021 and provided a liquidity update. Fiesta President and Chief Executive Officer Richard Stockinger said, Both of our brands demonstrated sequential improvement in comparable restaurant sales from third quarter levels du 