Ingredients

• olive oil or canola oil cooking spray
• 2 cups water plus 1 tablespoon, divided
• 1 cup quick barley
• 1 cup salted shelled pistachios, divided
• ½ cup whole-wheat panko breadcrumbs
• 1 teaspoon orange zest
• ½ teaspoon garlic powder
• 1 large egg white
• 2 (8 ounce) boneless, skinless chicken breasts, trimmed and cut in half crosswise
• ½ teaspoon salt, divided
• 2 tablespoons extra-virgin olive oil
• 1 cup cherry tomatoes, halved
• 1 tablespoon white-wine vinegar
• 1 cup chopped fresh parsley