01 - Pat the chicken thighs dry with paper towels. Season generously with salt and pepper on all sides. Dredge each thigh lightly in flour, shaking off any excess.
02 - Heat olive oil in a large Dutch oven or heavy-bottomed pot over medium-high heat. Sear the chicken thighs in batches, browning both sides for about 4 minutes per side until a deep golden crust forms. Transfer to a plate and set aside.
03 - In the same pot, add the diced onion, carrots, and celery. Sauté for 5 to 6 minutes until the vegetables are softened and fragrant. Add the minced garlic and cook for 1 additional minute, stirring constantly.
04 - Pour in the dry white wine, scraping the bottom of the pot with a wooden spoon to release any browned bits. Let the wine reduce for 2 to 3 minutes.
05 - Add the diced tomatoes with their juices, chicken stock, dried thyme, and bay leaf. Stir to combine and return the seared chicken thighs to the pot, nestling them into the liquid.
06 - Bring the liquid to a gentle simmer. Cover the pot with a tight-fitting lid, reduce the heat to low, and cook for 1 hour, stirring occasionally, until the chicken is fall-off-the-bone tender.
07 - Remove the lid for the last 15 minutes of cooking to allow the sauce to reduce and thicken to your desired consistency.
08 - Remove from heat and discard the bay leaf. Stir in the lemon zest and chopped parsley. Taste and adjust seasoning with salt and pepper as needed. Serve hot over polenta, mashed potatoes, or alongside crusty bread.