
Add 2-3 tablespoons of olive oil to a large pan on a medium heat and add the whole peeled garlic clove. Let it fry gently for 1 minute or so until it just starts to turn lightly golden, then remove it and set aside.
Add the chicken skin side down and cook for 5-7 minutes, then turn them around with kitchen tongs and cook for another 5 minutes on the other side. Remove the chicken from the pan to a plate and set aside.
Add the sliced onion to the pan (add more oil if necessary) and saute for 5 minutes until soft then add the sliced peppers and cook for another 5 minutes.
Add the chicken and garlic back to the pan, then add the white wine and let it simmer and reduce for a few minutes. Add the tomato passata with a good pinch of salt and pepper, then cover with a lid and cook on low for 25-30 minutes.
Remove the lid and cook for a further 20 minutes to reduce the sauce, then serve.