Del Taco Restaurants, the second largest Mexican-American quick service restaurant chain by units in the U.S., has appointed Tim Hackbardt Chief Marketing Officer. Hackbardt has over 27 years of experience and has led or advised numerous restaurant chains. Among these brands are BJ’s Restaurant & Brewhouse, Rubio’s, Pieology, Steak ‘n Shake, Johnny Rockets, and Lucille’s Smokehouse Bar-B-Que.