Coat the Raw Poultry: Toss your completely cold, evenly diced chicken chunks directly into a massive glass bowl with the 1/3 cup of dry cornstarch. Vigorously mix the heavy meat until every single tiny piece is fiercely covered in a stark white, totally dry layer.
Pan-Fry the Meat: Drop the olive oil directly into an intensely hot, incredibly wide skillet over medium-high heat. Let the coated meat aggressively sizzle and completely brown for exactly 6 minutes without constantly stirring, ensuring a crispy crust forms.
Whisk the Citrus Glaze: While the chicken fries, grab a small ceramic bowl. Fiercely whisk the fresh orange juice, dark soy sauce, brown sugar, grated garlic, minced ginger, and toasted sesame oil together until the sugar dissolves.
Pour and Boil: Once the hot poultry develops a fiercely dark, crispy crust, aggressively pour the wet citrus mixture inside. Vigorously lower the stove heat to medium-low and let the wildly bubbling sauce gently simmer for exactly 3 minutes.
Thicken the Hot Sauce: Fiercely whisk your remaining 1 tablespoon of dry cornstarch with 1 tablespoon of incredibly cold water in a tiny cup. Aggressively pour this stark white slurry directly into the boiling pan, constantly stirring for 60 seconds until the glaze becomes remarkably glossy and heavily coats the meat.
Garnish and Serve: Pull the massive skillet entirely off the hot burner. Aggressively scatter your fresh orange zest across the sticky meat, stir once, and forcefully serve piping hot over fluffy white rice!