Add the light mayonnaise, dill relish, ketchup, mustard, and vinegar to a small bowl. Mix the ingredients together, cover, and refrigerate.
Heat a nonstick skillet over medium heat and add the ground beef. Season with garlic powder, onion powder, salt, and black pepper.
Once the ground beef is no longer pink, remove any excess grease. Add a splash of Worcestershire sauce and stir together.
Heat the tortillas then add two spoonfuls of ground beef. Top the ground beef with shredded lettuce, cheese, onion, pickle chips, and Big Mac sauce.