To a large skillet, add the olive oil, chicken, evenly season with salt and pepper, and cook over medium-high heat for about 5 minutes, or until chicken is 90% cooked through. Stir and flip intermittently to ensure all sides cook evenly. Add 3 tablespoons Balsamic Salad Dressing, 1 tablespoon balsamic vinegar, stir to combine and make sure all pieces of chicken are coated. Cook for another 1 to 2 minutes over medium heat or until chicken is cooked through. Allow chicken to rest in pan, off the heat, while you plate the salad. To a large platter or bowl, add the lettuce, tomatoes, mozzarella, cucumber, chicken, and evenly sprinkle with basil. Drizzle with salad dressing and balsamic vinegar, to taste. Toss to combine and serve immediately.