Combine first 9 ingredients in a large bowl; marinate in refrigerator 2 hours, stirring occasionally.
Preheat oven to 425°.
Remove chicken from bowl, reserving marinade. Combine cornstarch and water in a small bowl. Place the reserved marinade in a small saucepan; bring to a boil. Stir in cornstarch mixture, and cook for 3 minutes or until thickened, stirring frequently. Remove from heat. Place chicken on a broiler pan coated with cooking spray; sprinkle with salt and pepper. Bake at 425° for 30 minutes or until chicken is done, basting with reserved marinade every 10 minutes.