Big Papi’s Tacos, a Mexican restaurant chain from Frederick, is heading to downtown Rockville. The restaurant is moving into the former Domoishi Asian food hall space at 201 East Middle Lane, across the street from Rockville Town Square. Big Papi’s is best known for its quesabirria tacos, featuring slow-cooked meats and cheese with a consomé dip. You can also get your tacos filled with rockfish, shrimp, veggies or vegan chorizo, along with traditional Mexican sides. And for dessert: churros or tres leches. Big Papi’s will be just around the corner from Little Miner Taco, which opened last year on Maryland Avenue. Another nearby Mexican spot, Tequila, closed its doors in January after a very short run on North Washington Street.