Prep the chicken. Pat the chicken dry. Season on both sides with salt, pepper, smoked paprika, and a pinch of ground ginger or cinnamon if using. This helps with browning and builds flavor.

Slice the peaches and aromatics. Cut peaches into thick wedges so they hold their shape. Thinly slice the onion and mince the garlic. Have your broth, vinegar, and mustard ready.

Sear the chicken. Heat a large skillet over medium-high. Add a swirl of olive oil. Sear chicken 4–6 minutes per side until golden and nearly cooked through. Transfer to a plate and tent loosely with foil.

Soften the onions. Lower heat to medium. Add a little more oil if the pan is dry. Cook onions with a pinch of salt until translucent and lightly browned, about 3–4 minutes. Stir in garlic for 30 seconds until fragrant.

Caramelize the peaches. Add peach slices and a pinch of salt. Let them sit undisturbed for 1–2 minutes to get color, then gently toss. Cook until edges caramelize and peaches are tender but not mushy, 3–4 minutes total.

Deglaze and build the sauce. Pour in the broth (or wine) and scrape up brown bits. Stir in vinegar, Dijon, red pepper flakes, and honey if using. Simmer 2–3 minutes to slightly reduce.

Finish the chicken in the sauce. Return chicken and any juices to the skillet. Tuck in thyme or rosemary. Simmer gently 3–5 minutes, spooning sauce over the top, until chicken is cooked through and peaches are glossy.

Add butter and brighten. Off heat, swirl in butter to thicken the sauce. Taste and adjust: more salt, pepper, or a splash of vinegar. Add lemon zest or a squeeze of lemon if you like extra brightness.

Serve. Spoon peaches and pan sauce over the chicken. Garnish with extra herbs. Serve with rice, couscous, mashed potatoes, or crusty bread to catch the sauce.