Ingredients

1/4 cup olive oil3 tablespoons lemon juice1 tablespoon white wine vinegar2 garlic cloves, minced2 teaspoons grated lemon zest1 teaspoon salt1/2 teaspoon sugar1/4 teaspoon dried oregano1/4 teaspoon pepper1-1/2 pounds boneless skinless chicken breasts, cut into 1-1/2-in. pieces3 medium zucchini, halved lengthwise and cut into 1-1/2-inch slices3 medium onions, cut into wedges12 cherry tomatoes

Preparation

In a large bowl, combine the first 9 ingredients; set aside 1/4 cup for basting. Pour half into a large bowl. Add chicken; turn to coat. Pour the remaining marinade into another large bowl. Add the zucchini, onions and tomatoes; turn to coat. Cover; refrigerate chicken and vegetables for up to 4 hours or overnight.

Drain chicken and vegetables, discarding marinade. Alternately thread chicken and vegetables onto metal or soaked wooden skewers. Grill, covered, over medium heat for 6 minutes on each side or until chicken juices run clear, basting occasionally with reserved marinade.