1. Combine first 6 ingredients in a large zip-top plastic bag. Add chicken to bag; seal, and turn to coat. Marinate at room temperature 30 minutes, turning occasionally.
2. Preheat oven to 450°.
3. Remove chicken from bag, reserving marinade. Combine reserved marinade and cornstarch in a medium saucepan, stirring with a whisk. Bring marinade mixture to a boil over medium heat; cook 3 minutes or until mixture thickens, stirring occasionally.
4. Place chicken on a wire rack coated with cooking spray. Place rack on a rimmed baking sheet. Bake at 450° for 15 minutes. Brush 1/2 cup marinade mixture over chicken. Bake an additional 15 minutes or until chicken is done. Place chicken in a large bowl. Add remaining marinade mixture; toss well to thoroughly coat chicken.
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