Kung Pao Chicken

Name: Kung Pao Chicken
Ingredients: 1lb chicken breast (cut into 1-inch cubes); 1 tablespoon coconut oil; 2 cups mushrooms (quartered); 2 bell peppers (chopped); 4-6 green onions (cut into 1-inch pieces); 2 tablespoons corn starch (non-GMO and/or organic) (divided); 1 tablespoon water; 3 tablespoons reduced sodium tamari (divided); 2 tablespoons sriracha sauce; 2 teaspoons rice wine vinegar; 10-12 dried red chiles; 1/4 cup nuts, such as peanuts or cashews