Fresh Pepper Kung Pao Chicken

Name: Fresh Pepper Kung Pao Chicken
Ingredients: 2 tsp. Shaoxing wine, dry sherry, sake, or mirin; 2 tsp. soy sauce; 1 tsp. cornstarch; 1 lb. skinless, boneless chicken thighs or breasts, cut into 1 pieces; 2 Tbsp. rice vinegar; 1 Tbsp. soy sauce; 1½ tsp. sugar; 2 Tbsp. vegetable oil, divided; 1 bell pepper, cut into bite-size pieces; 8–10 red dried chiles (such as chiles de árbol, bird chiles, or frankly any kind; or ½ tsp. crushed red pepper flakes); 2 scallions, chopped; 1 Fresno chile, cut into ¼ rings; 1 1 piece fresh ginger, peeled, finely chopped; 2 garlic cloves, thinly sliced; ½ tsp. Sichuan peppercorns or cracked black peppercorns; ⅓ cup roasted unsalted peanuts; Kosher salt