Mexican Chicken Black Bean and Corn Salad

Ingredients: 2   boneless, skinless cooked chicken breasts, cut into strips 1   cup canned black beans, drained and rinsed 1   cup frozen corn kernels, thawed 2   Roma tomatoes, coarsely chopped 1 red onion, coarsely chopped 1   11 oz. jar salsa 1/2 teaspoon cumin 1/3 cup red-wine vinegar 2   tablespoon chopped cilantro 12 large lettuce leaves Optional: […]