Set up a breading station for the chicken. Place the flour in a dish. Whisk the egg and egg white together with 1 tablespoon water in a second dish. Mix the whole wheat and panko breadcrumbs together in a third dish. Season the chicken on both sides with salt and pepper. Working one at a time, dredge each breast first in the flour, shaking off any excess. Then dip in the egg mixture and finally in the breadcrumbs.

Place the chicken on a baking sheet lined with parchment paper and spray with olive oil spray. Bake in the oven until browned, about 10 minutes. Flip and cook another 10 minutes until cooked through.

While the chicken is cooking, make the salad. Whisk the vinegar, oil, shallot and mustard together in a small bowl. Season the vinaigrette with a pinch of salt and pepper. Toss the vinaigrette with the salad greens and tomatoes in a large bowl.

Remove the chicken from the pan and place on a serving plate. Top the chicken with some salad and serve any extra salad on the side. Garnish with shavings of Parmesan cheese. Serve immediately.