Cook bacon in medium nonstick skillet on medium heat until crisp. Remove bacon from skillet, reserving 4 tsp. drippings in skillet.
Drain bacon on paper towels.
Add eggs, 1 at a time, to drippings in skillet; cook 3 min. or until whites are firm and yolks are cooked to desired doneness.
Bring broth to simmer on medium-low heat in medium saucepan.
Add roast beef; cook just until heated through, stirring occasionally. Drain roast beef; discard broth.
Spread barbecue sauce onto bottom halves of buns.
Fill buns with roast beef, cheese, bacon and eggs.