Determining the best tacos in Dallas will be guest judges Evelyn Garcia (chef, television personality and restaurateur), Grant Williams (NBA player for Dallas Mavericks) and Mark Istook (WFAA anchor). 

And in Atlanta, Kandi Burruss (television personality, GRAMMY Award-winning producer and restaurateur), Todd Tucker (producer and restaurateur) and Brian Monahan (WSB meteorologist) round out the series to select the city's most supreme taco.