1. Cook bacon in a large nonstick skillet over medium heat 2 minutes or until crisp. Remove bacon from pan; crumble. Add onion, garlic, and jalapeño to drippings in pan; cook 3 minutes or until onion is tender. Place onion mixture in a small bowl. Lightly mash 1 cup beans. Add mashed beans, cumin, salt, and remaining beans to pan; cook 2 minutes over medium heat or until thoroughly heated, stirring occasionally. Stir in bacon.
2. Combine vinegar, mayonnaise, and black pepper in a large bowl, stirring with a whisk. Add coleslaw, cilantro, and green onions; toss to coat.
3. Heat tortillas according to package directions. Divide bean mixture evenly among tortillas. Top evenly with onion mixture and coleslaw mixture. Sprinkle evenly with feta cheese.