Diabetic-friendly Mediterranean fish bake

Ingredients

• 2 courgettes, trimmed, cut into chunks
• 2 Lebanese eggplant, trimmed, cut into chunks
• 175 gram packet petite capsicums, halved, seeded
• 1 red onion, thickly sliced
• 2 garlic cloves, sliced
• finely grated zest and juice of 1 lemon
• 1 tablespoon olive oil
• 400 gram can diced tomatoes
• 1/4 cup Kalamata olives
• 1/4 cup parsley leaves
• 1/4 cup dill, chopped
• 4 x 150g firm white fish fillets
• 1 tablespoon pine nuts, toasted
• couscous, lemon wedges to serve