Season the chicken thighs generously with salt. Place them skin-side down in a cold frying pan and heat over a medium flame. Cook until the skin is golden and crispy, and the flesh is almost cooked through. Turn them over and cook for a further one to two minutes, then remove them from the pan and set them aside.
Using the chicken fat rendered in the same pan, add the sliced peppers with a pinch of salt. Cook over a high heat for about 10 minutes, stirring occasionally, until softened and nicely charred. The charring is essential for flavour.
Add a splash of white wine (about half a measure), allow it to bubble for a few seconds, then cover with a lid. Reduce to a gentle simmer and cook for 25–30 minutes, until the peppers are soft and slightly sticky. Check occasionally and add a little water if needed to prevent them from drying out.
Remove the lid and increase the heat slightly. If the pan looks dry, drizzle in a little olive oil. Stir in the garlic, paprika and herbes de Provence, then cook gently for one minute until fragrant.
Mix the remaining wine with the chicken stock. Return the chicken to the pan, skin side up, and pour the liquid around the chicken, taking care not to get it on the skin.
Bring to a gentle simmer and cook uncovered for 8–10 minutes, until the chicken is fully cooked through and the sauce has reduced slightly.
Scatter with chopped parsley, then serve with crème fraîche and plenty of crusty bread, potatoes or rice.