Preheat oven to 425 degrees F. Spray baking sheet with vegetable spray.
In a small bowl, whisk together whole egg, egg white and water. On plate stir together bread crumbs, parsley and Parmesan. Dip eggplant slices in egg wash, then coat with bread-crumb mixture. Place on prepared pan and bake for 20 minutes, or until tender, turning once.
Meanwhile, pound chicken breasts between slices of waxed paper to 1/4-inch thickness. Dip chicken in remaining egg wash, then coat with remaining bread-crumb mixture. heat oil and garlic in nonstick skillet sprayed with vegetable spray and cook for 4 minutes, or until golden brown, turning once.
Spread 1 tablespoon of tomato sauce on each eggplant slice. Place one chicken breast on top of each eggplant slice. Spread another 1 tablespoon of tomato sauce on top of each chicken piece. Sprinkle with cheese and bake for 5 minutes or until cheese melts.