For the chicken: – 1 pound boneless skinless chicken breast cut into 1/4 inch slice – 1 tablespoon soy sauce – 1/2 teaspoon garlic powder – 1/2 teaspoon onion powder – 2 tablespoons cornstarch For the sauce: – 1/4 cup unsalted chicken stock – 3 tablespoons light brown sugar packed – 3 tablespoons soy sauce – 1 tablespoon oyster sauce – 1 tablespoon rice wine vinegar – 2 teaspoons cornstarch For assembly: – 3 tablespoons vegetable oil – 8 ounces white mushrooms thinly sliced – 2 cups zucchini 1/4 inch thick sliced half moon – 1 tablespoon minced fresh ginger – 2 cloves garlic minced – sesame seeds for garnish optional – thinly sliced scallions for garnish optional