Season the chicken thighs with salt and pepper. Heat olive oil in your pot over medium-high heat. Sear the chicken on both sides until golden brown, locking in the juices. Once browned, remove and set aside.
In the same pot, add onions and garlic to the flavorful oil left behind. Sauté for 2–3 minutes until softened and fragrant. Pour in the chicken broth, scraping the bottom to release all the browned bits—this is where the flavor hides.
Return the chicken to the pot. Sprinkle in thyme and stir in the tomato purée until everything is well coated. If you like, add a couple of thin lemon slices for brightness.
Add red bell pepper, carrot, and any extra vegetables you’re using. Stir gently to let them mingle with the broth and chicken. Cover and simmer for 25–30 minutes until the chicken is fully cooked and veggies are tender.
Once done, turn off the heat and top with chopped spring onions. Serve hot straight from the pot for that rustic, comforting vibe.