Toss the diced chicken thighs with the soy sauce, onion powder, red pepper flakes, black pepper, grated garlic, baking soda, and cornstarch. Let sit about 10 minutes to tenderize.
Whisk the sauce: soy sauce, chili crisp, rice vinegar, brown sugar, sesame oil, peanut butter, and grated garlic until smooth.
Heat a little oil in a pan over medium-high heat and sear the chicken, undisturbed at first, until golden and cooked through.
Add the butter and let it melt, then pour in the sauce. Simmer, tossing, until it thickens into a glossy glaze that coats the chicken (add a splash of water if too thick).
Serve over rice; garnish with sesame seeds and sliced scallions if you like.
From Zach Olson (@zachs.foods), a 20-minute weeknight dish shared via https://www.instagram.com/reel/De2Cg_0ilUy/ . Ingredients are exactly as listed in the reel; the method follows the velvet-sear-glaze flow shown in the video.