Ingredients:  – 6 cups low-sodium chicken broth – 1 cup orzo (uncooked) – ½ teaspoon salt – ¼ teaspoon pepper – 1 tablespoon cornstarch – ¼ cup lemon juice – 2 large eggs (whisked) – 8 ounces shredded cooked chicken breast (such as rotisserie) – 1 bundle green onions (optional garnish)