Chicken-and-Summer-Squash Kebabs

Ingredients in this Recipe

1 1/2 pounds boneless, skinless chicken breasts, cut into 1 1/2 inch chunks (16 pieces)
1 lemon, juiced, plus zest
1 lime, juiced, plus zest
1 orange, juiced, plus zest
1 red onion, halved, cut into 1 inch wedges
1/2 cup olive oil
1/4 cup balsamic vinegar
2 cups cherry tomatoes, cut in half
2 large zucchini, halved, cut into eighths
2 teaspoons chili powder
2 teaspoons ground cumin
2 yellow squash, halved, cut into eighths
5 cups arugula (or other salad greens)
Coarsely ground black pepper
Vegetable oil cooking spray

See Full Recipe at Epicurious