Houston — Authentic fast-casual Mexican concept Überrito Fresh Mex, which first launched in 2014 in Houston’s Durham Park neighborhood, has revamped its restaurant model and, with the support of parent company MRI Heritage Brands, Inc., eyes a more ambitious franchise expansion program. “Almost everyone can relate to a freshly made burrito or taco because people are driven by an emotional connection to authentic Mexican food — it’s very strong and powerful,” says Pete Pascuzzi, CEO of MRI Heritage Brands, Inc. “We’ve remained true to who we are as a brand …