Finely chop the onion and garlic. Slice the yellow pepper and mushrooms, and cut the courgette into bite-sized chunks.
Heat the olive oil in a large saucepan or casserole dish. Brown the pork slices on both sides, then transfer them to a plate.
Add the onion to the pan and sauté for about 5 minutes until softened. Stir in the garlic, yellow pepper, mushrooms and courgette.
Add the dried herbs and cook for another minute, stirring to coat the vegetables.
Pour in the passata and add the stock cube with enough water to make a rich, slightly loose sauce. Bring to the boil, then cover and simmer gently for 10 minutes.
Return the pork to the pan and cook for another 15–20 minutes, or until the pork is cooked through and the vegetables are tender.
Cut the Peppadew or roasted peppers into chunks and stir them into the stew with the olives. Warm through briefly, then season to taste.
Scatter with fresh parsley and serve.