Preheat oven to 400 degrees. Wrap tortillas in foil, place in oven, and warm while preparing the filling.
In a medium saucepan, heat oil over medium heat. Add scallions and garlic; cook 1 minute until fragrant. Stir in beans, chipotle, and 1 cup water. Bring to a simmer, season with salt and pepper; cook until slightly thickened and hot, 5 to 7 minutes. Stir in salsa (if desired), corn, and lime juice; cook until heated through.
Unwrap tortillas; spread yogurt over one side. Top with bean mixture, cilantro leaves, lettuce, and cheese. Fold tortillas over. Serve with salsa and chipotle, if desired.