Preheat the oven to 220C/425F/Gas 7. Put the tomatoes and pepper in a small roasting tin, spray with a little oil, season with black pepper and bake for 15 minutes.
Meanwhile, cook the bulgur wheat in a small pan of boiling water for five minutes, then drain well in a sieve.
Toast the pine nuts in a small dry pan over a medium heat, turning regularly, until lightly browned.
Cut the lemon in half and cut four thin slices from one half. Squeeze the juice from the other half.
Take the vegetables out of the oven. Add the bulgur wheat, spring onions, pine nuts, two heaped tablespoons of coriander and lemon juice (reserve a little lemon juice to serve). Season with ots of black pepper and toss lightly.
Make two gaps in the bulgur mixture and nestle the fish into them. Season the fish to taste, spread with the harissa paste and top with lemon slices. Bake for 15 minutes, or until the fish is just cooked.
Steam the broccoli until cooked to your liking.
Divide the fish and bulgur mixture between two plates and scatter with the remaining coriander. Squeeze over the rest of the lemon juice. Add broccoli to the plates and serve with yoghurt.