Gently heat the olive oil in a large pot. Add the chicken pieces and brown on all sides. Toss in the garlic and carefully turn the chicken pieces, ensuring the garlic does not burn. Add the remainder of the ingredients and cook over a medium heat for 30 minutes. Turn the heat down to low, put a lid on the pot and simmer for another 45 minutes. Remove the sprigs of thyme and adjust the seasoning to taste before serving. Serve with rice.