Steam Swiss chard, covered, 2 minutes or until crisp tender. Drain.
Combine chicken and cornstarch in a small bowl. Heat oil in a large nonstick skillet over medium-high heat until hot. Add onion, and stir-fry 2 minutes. Stir in chicken, and cook 4 minutes or until browned. Stir in broth and next 8 ingredients (broth through red pepper); reduce heat to medium. Cook 5 minutes, stirring occasionally. Add Swiss chard, and cook 2 minutes. Serve with rice. Sprinkle peanuts evenly over each serving.