Preheat the oven to 425 degrees F. Sprinkle the chicken with salt and pepper. Heat the oil in a large oven-proof skillet over medium-high heat. Add the chicken, skin side down, and cook, until browned on both sides, about 4 minutes per side. Transfer the chicken to a plate.
Reduce the heat to medium, add the onion, garlic and red pepper flakes and cook until the onions are soft, about 7 minutes. Add the tomato paste and stir until it coats the onions and is a shade darker, about 1 minute. Pour in the wine and scrape up any brown bits on the bottom of the skillet. Add the broth, beans, tomatoes and oregano and bring to a boil. Nestle the chicken in the skillet along with any juices from the plate. Transfer the skillet to the oven and bake until the chicken is cooked through, about 25 minutes.
Transfer the chicken thighs to a platter. Stir the cheese into the bean mixture and season with salt and pepper and garnish with fresh oregano if using. Serve with the chicken and extra parmesan cheese for topping.
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