Cut the dried peppers into 1/3 inch pieces. Discard stems but keep the seeds if you like it spicy. You should have about 1/2 cup of chilies after cutting.
Add 2 tsp Sichuan peppercorns to the cut chilies and set these aside.
Smash the ginger and garlic with the side of a knife and roughly chop. Do not chop too finely. Set aside
Remove the roots from the scallions and cut into 1/3 inch pieces. Set aside
Make sure you have all of your ingredients ready and within reach before cooking. Have a strainer ready nearby so that you can drain the chicken after it has shallow fried
Heat up about 2/3 cup of neutral oil over medium heat.
Add the marinated chicken to the oil.
Cook the chicken over medium/medium-high heat for about 2-3 minutes while stirring. This may seem like a lot of oil but you will be draining away most of it. The temperature of the oil should induce a very gentle fry. The chicken should not be popping and hissing aggressively. Imagine something between a poach and a fry.
When the chicken is cooked through and just started to color lightly, drain the chicken with a strainer. The oil will be discarded.
Thoroughly clean out the wok/pan and heat up 2-3 Tbsp fresh neutral oil over high heat. Swirl the wok/pan to coat in oil.
When the oil is hot and starting to smoke, add the cut chilies and sichuan peppercorns to the oil. Cook for about 3-5 seconds or until the chilies start to darken. Do not let them get burnt.
Before the chilies burn, add the garlic and ginger and cook for another 5-10 seconds over high heat.
Immediately add the cooked chicken back to the pan before the chilies get too dark.
Stir fry over high heat for approximately 20 seconds. If possible, flip the contents of the pan so that you can get a few licks of flame from the contents of the pan.
Stir the sauce to re-dissolve any corn starch that may have settled to the bottom of the container and add it to the pan. cook for about 10 seconds.
Add the peanuts and scallions to the pan.
Stir fry for another 20-30 seconds or until the sauce has reduced and is coating the chicken.
Adjust seasoning if necessary with salt, soy, sugar and/or vinegar.
Serve with freshly steamed white rice