Tender cubes of chicken breast are lightly coated with cornstarch, then stir-fried until golden and juicy. A bold sauce of hoisin, soy, oyster, and Sriracha brings layers of sweet, savory, and spicy flavor, balanced with a splash of chicken stock. Red onion, bell pepper, garlic, and fresh ginger add aromatic depth, while cilantro and crunchy roasted peanuts finish the dish with freshness and texture. Quick to prepare and bursting with flavor, this stir-fry is perfect served over steamed rice or noodles for a satisfying, restaurant-style meal at home.