Clay Stewart’s late grandfather called him Zeke. No one else in the family used the nickname, and none of them knew where it came from. When Stewart opened a barbecue trailer in Huntsville with his wife, Sara, in 2022, the couple wanted a meaningful name that was catchy. “In honor of my grandpa, we named it Zeke’s,” Stewart said. With Zeke’s Craft BBQ emblazoned in neon pink on the truck, Zeke is now what most of Stewart’s customers call him, and he stopped correcting them long ago.Stewart isn’t new to the restaurant business. He worked for Bubba Gump Shrimp Co. in Miami, Florida; Colorado; and Maui in the early 2000s. Stewart came back home to Texas in 2007 to attend the Art Institute of Houston’s…