Optional: ¼ cup chicken stock or white wine (for deglazing)
Method
Pat the chicken dry with paper towels. Season generously on both sides with salt and pepper.
Heat the olive oil in a stainless steel sauté pan over medium-high heat. Place the chicken skin-side down and cook undisturbed for 6–8 minutes, until the skin is golden and releases easily from the pan.
Turn the chicken over. Add the garlic, red onion, lemon slices, and thyme to the pan. Reduce heat to medium.
Continue cooking for 12–15 minutes, turning the chicken once more if needed, until the internal temperature reaches 74°C / 165°F.
If desired, remove the chicken briefly and deglaze the pan with chicken stock or white wine, scraping up any browned bits. Return the chicken to the pan and spoon the sauce over the top.
Remove from heat and let rest for 5 minutes. Serve with lemon wedges and pan juices.