Preheat oven to 190c. Gently wipe or peel the mushrooms and remove the stalks.
Finely chop the mushroom stalks. Heat 1 tbsp of oil in a medium fry pan on high heat. Add the mushroom stalks, onion, garlic and parsley to the pan and sauté for 5 minutes.
In a bowl, mix the breadcrumbs, parmesan, oregano, and mushroom together.
Place the mushrooms on a lined baking tray and top with the filling. Drizzle over the remaining 1 tbsp oil. Bake for 20 minutes.
To make the salad, on a separate baking tray, add the chickpeas, oil, paprika and gently shake to mix. Bake in the oven for 15 minutes.
To serve, mix the chickpeas with the rocket, walnuts and plate up with the mushrooms.