Marinate the chicken with 2 tbsp light soy sauce, 1 tbsp Shaoxing wine and 1 tsp cornstarch for 10 minutes.
Whisk together sauce ingredients: 2 tbsp light soy, 1 tbsp dark soy (optional), 1 tbsp vinegar, 1 tbsp hoisin, 1 tbsp chili paste, 1 tbsp sugar and 1/2 cup stock; set aside.
Heat a wok or large skillet over high heat and add 2 tbsp vegetable oil until shimmering.
Add dried red chilies and stir briefly until fragrant (about 30 seconds) being careful not to burn them.
Add marinated chicken in a single layer and stir-fry until mostly cooked through, about 3–4 minutes.
Push chicken to the side, add a touch more oil if needed, then add minced garlic and ginger; stir until aromatic.
Add diced red bell pepper and the white parts of scallions; stir-fry 1–2 minutes until slightly softened.
Pour the prepared sauce into the wok, bring to a simmer and stir to coat the chicken evenly.
Stir in the cornstarch slurry and cook until the sauce thickens and becomes glossy, about 1 minute.
Add roasted peanuts and 2 tsp sesame oil, toss to combine; stir in green scallion tops and remove from heat.
Serve immediately over steamed jasmine rice or noodles.