In medium bowl, combine onion, grapes and rice vinegar; set aside.
In large skillet, heat oil over medium-high heat. Add chicken and cook, stirring frequently until just cooked through, about 6-7 minutes. Season chicken with salt and pepper. Stir in chilies, fish sauce, lime juice, cilantro and mint.
Divide rice between four serving dishes and top with chicken, cabbage, marinated onions and grapes; sprinkle with peanuts.
Notes
Nutritional information per serving: 540 calories; 26 g protein; 65 g carbohydrates; 19 g fat (32% calories from fat); 3.5 g saturated fat (6% calories from saturated fat); 100 mg cholesterol; 480 mg sodium; 3 g fiber.