1. Preheat broiler.
2. Arrange bread in a single layer on a baking sheet. Broil 1 minute or until toasted.
3. Steam green beans 3 minutes or until crisp-tender. Drain and rinse with cold water; drain.
4. Combine oil and next 5 ingredients (through pepper) in a medium bowl, stirring with a whisk. Add chicken, beans, and tomatoes; toss to combine. Serve with toast.