Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
In a large bowl, combine the chicken pieces, bell peppers, broccoli, onion, and cashews.
In a separate small bowl, whisk together the soy sauce, honey, olive oil, rice vinegar, garlic, ginger, salt, and pepper.
Pour the sauce over the chicken and vegetables, tossing everything until well coated.
Spread the mixture evenly on the prepared baking sheet.
Bake for 20-25 minutes, or until the chicken is cooked through and the vegetables are tender. Stir halfway through cooking for even browning.
Serve hot over cooked rice or quinoa.