1. Cook quinoa according to package directions, omitting salt and fat. Drain and place in a large bowl. Let cool 1 hour.
2. While quinoa cools, combine oil and next 4 ingredients (through pepper) in a small bowl, stirring with a whisk. Let stand 20 minutes.
3. Add dressing, tomato, and next 4 ingredients (through chickpeas) to quinoa; toss well. Add cheese, and toss gently. Serve with lemon wedges.
Kids Can Help: With a child-safe knife, kids can chop the tomatoes and cucumber, and then crumble the feta.