Grind the walnuts and mix with the breadcrumbs. Bring the vegetable stock to the boil and stir into the nut mixture while hot with a whisk. Mix with salt, pepper, pressed garlic, white wine vinegar and 3 tablespoons of olive oil. Let the sauce cool down.
Remove the chicken from the bones and cut into bite-sized pieces. Mix the meat with the sauce.
Mix the rest of the olive oil with the paprika powder and bring to the boil. Pour over the meat before serving. Serve sprinkled with parsley.