Prepare The Chicken: Season the chicken pieces with salt and pepper. Heat olive oil in your Le Creuset Dutch oven over medium-high heat. Sear the chicken until golden brown on both sides, about 5-7 minutes per side. Remove the chicken from the pot and set aside.
Cook The Vegetables: In the same pot, add the chopped onion, garlic, celery, and bell peppers. Sauté for approximately five minutes, or until the veggies are tender and the onion is transparent.
Build The Sauce: Stir in the diced tomatoes, chicken broth, and tomato paste. Add the fresh thyme and bay leaf. Bring the sauce to a simmer, allowing it to reduce slightly, about 10 minutes.
Combine And Braise: Add the seared chicken back into the Dutch oven, nestling it into the sauce. Cook, covered, over low heat for 45 to 1 hour, or until the chicken is tender and cooked through. Stir occasionally to make sure the sauce doesn’t stick to the bottom of the pot.
Finish And Serve: Remove the bay leaf and sprinkle fresh parsley over the top before serving. Adjust the seasoning with salt and pepper if needed.