1. Preheat oven to 425°.
2. Combine first 5 ingredients in a large bowl; toss well to coat. Arrange vegetables in a single layer on 2 jelly-roll pans coated with cooking spray. Bake at 425° for 30 minutes, turning after 15 minutes or until tender and lightly browned.
3. Combine vegetables, chives, and remaining ingredients in a large bowl; toss gently to coat.