Prep the chicken: Pat chicken dry.
Season both sides with salt and pepper. If using breasts, slice into thinner cutlets for quicker, even cooking.
Heat the pan: Set a large skillet over medium-high heat. Add oil and let it shimmer.
Sear the chicken: Lay chicken in the pan without crowding.
Sear 4–5 minutes per side for thighs (3–4 for cutlets) until golden. Remove to a plate; keep the pan on medium.
Sauté aromatics: Add butter. Stir in garlic (and ginger, if using).
Cook 30–45 seconds until fragrant—don’t let it burn.
Build the sauce: Whisk in soy sauce, vinegar, sesame oil, “honey” substitute, red pepper flakes, and broth. Simmer 2–3 minutes to meld flavors.
Thicken (optional): Sprinkle xanthan gum lightly over the bubbling sauce while whisking. Start with 1/8 teaspoon—add a pinch more only if you need a thicker glaze.
Finish the chicken: Return chicken and any juices to the pan.
Spoon sauce over the pieces. Simmer 3–5 minutes, turning once, until coated and cooked through (165°F internal temp).
Taste and adjust: Add a splash more vinegar if it needs brightness or a few drops of stevia if you want extra sweetness.
Garnish and serve: Top with sesame seeds and green onions. Serve over cauliflower rice, zoodles, or with steamed veggies.