In August, Michael Flores stopped doing his irregularly scheduled pop-ups under the banner of Friends’ Barbecue to join his family’s business, Jiménez Tortilleria y Taqueria. You may have read about the Lubbock restaurant’s amazing tacos de guisado from our taco editor, José Ralat, last year. Now that Flores is on board full-time, the family has tweaked the name to Jiménez y Friends Barbecue y Taqueria, and it offers a full barbecue menu every Saturday and Sunday.I first met Flores at the 2023 Texas Monthly BBQ Fest, in Lockhart. He was serving tacos with his mother, Maria Flores, and his half brother, Mark Jiménez. He handed me a smoked barbacoa taco and a link of sausage split lengthwise, showing off bits of jalapeño and cubes of…