01 - Pat chicken thighs dry with paper towels and season both sides generously with salt and pepper.
02 - Heat olive oil in a large Dutch oven or deep skillet over medium-high heat. Place chicken thighs skin side down and sear until golden brown, about 5 minutes. Flip and cook for 5 minutes more. Remove chicken from pot and set aside.
03 - In the same pot, add onion, carrot, celery, and bell pepper. Sauté for 5 minutes until vegetables begin to soften. Add minced garlic and cook for 1 minute until fragrant.
04 - Pour in white wine if using, scraping up any browned bits from the bottom of the pot with a wooden spoon. Let the wine reduce for 1 minute.
05 - Stir in diced tomatoes, chicken broth, oregano, thyme, basil, bay leaf, and lemon zest if using. Bring the mixture to a simmer.
06 - Return chicken thighs to the pot, arranging them skin side up. Cover with lid and reduce heat to low. Braise gently for 40 minutes until chicken is tender and cooked through.
07 - Remove the lid and continue simmering uncovered for 10 minutes, allowing the sauce to reduce and thicken slightly.
08 - Remove and discard the bay leaf. Sprinkle with fresh chopped parsley and serve hot alongside polenta, crusty bread, or pasta.