Lighter General Tso's Chicken

INGREDIENTS

• 1 1/4 cups long-grain brown rice
• 1/4 cup cornstarch
• 1 pound snow peas, trimmed and halved crosswise
• 4 garlic cloves, sliced
• 2 teaspoons fresh ginger, grated and peeled
• 3 tablespoons light-brown sugar
• 2 tablespoons soy sauce
• 1/2 teaspoon red-pepper flakes
• 2 large egg whites
• Coarse salt and ground pepper
• 1 pound boneless, skinless chicken breasts, cut into 1-inch pieces
• 2 tablespoons vegetable oil, such as safflower