In 3- to 4-quart slow cooker, place pork. Sprinkle with chili powder and pepper sauce. Pour tomatoes over pork.
Cover; cook on Low heat setting 8 to 10 hours.
Remove pork from cooker; place on cutting board. Shred pork, using 2 forks; discard bones. Return pork to cooker and mix well. Using slotted spoon to remove pork mixture from cooker, fill each roll with 1/2 cup pork mixture. Top with cheese, lettuce and tomato.