With the possible exception of U.S. congressman Vicente Gonzalez, no local celebrity turns heads in the Rio Grande Valley as much as cook and YouTuber Arnie Segovia. It’s a Sunday in March, and Segovia and his wife, Terry, are taking having lunch at Dirty Al’s Bayou Grill, in McAllen. As they skim the menu, a young husband and wife with children in tow approach their table with a familiarity that suggests they may be relatives or neighbors. “I’m sorry, can we get a picture with you?” the woman asks Segovia, 62, who eagerly gets up and poses with the couple.“You’ve really upped my carne game,” the husband adds. These are just a few of the many fans of Segovia, who publishes videos on Instagram and YouTube on…