In a large bowl, combine Napa cabbage, red cabbage, carrot, scallions, water chestnuts, Mandarin orange and sliced chicken. In a separate bowl, whisk together tablespoons soy sauce, vinegar, garlic, ginger, oil, teaspoons sesame oil, brown sugar and chili sauce. Pour dressing over salad and toss to combine..To assemble the salad, place romaine lettuce in a large bowl top with red cabbage, carrots, edamame, green onion and chicken. Pour sesame vinaigrette on top of the salad and gently toss to combine. Serve immediately, topped with chow mein noodles and almonds, if desired..To make the salad In a large bowl, combine the chicken, cabbage, carrots, scallions, and cilantro. Shake the dressing to recombine and pour over the salad. Toss until evenly coated. Sprinkle with chow mein noodles and sesame seeds, if using, and serve..