1. Cook beef in large skillet over medium-high heat 7 minutes or until crumbled and no longer pink, stirring occasionally; drain. Add chili beans, chili powder and reserved liquid from tomatoes. Cook 2 minutes or until hot; set aside.
2. Divide lettuce between 4 serving plates. Spoon meat mixture evenly over lettuce. Top evenly with cheese, broken chips and drained tomatoes.