01 - Pat the chicken thighs dry with paper towels and season both sides generously with salt and pepper. Lightly dredge each thigh 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 approximately 4 minutes per side until a deep golden crust forms. Transfer the browned chicken 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 have softened. Add the minced garlic and continue cooking for 1 additional minute until fragrant.
04 - Pour in the dry white wine, using a wooden spoon to scrape up any browned bits from the bottom of the pot. Allow the wine to reduce for 2 to 3 minutes.
05 - Stir in the diced tomatoes, chicken stock, dried thyme, and bay leaf. Return the browned chicken thighs to the pot, nestling them into the liquid. Bring everything to a gentle simmer.
06 - Cover the pot with a tight-fitting lid and reduce the heat to low. Braise for 1 hour, stirring occasionally, until the chicken is fork-tender and falling off the bone.
07 - Remove the lid for the final 15 minutes of cooking to allow the sauce to reduce and thicken to your desired consistency.
08 - Remove the pot from the heat and discard the bay leaf. Stir in the fresh lemon zest and chopped parsley. Adjust the seasoning with additional salt and pepper to taste. Serve hot over polenta, mashed potatoes, or alongside crusty bread.