Dukkah-crusted fish with fattoush

Ingredients

• 1 piece lebanese bread
• 4 150g firm white fish fillets
• 2 tablespoon garlic-flavoured butter, melted
• 2 tablespoon bought dukkah, plus 1 teaspoon extra
• 2 lebanese cucumbers, peeled, halved lengthwise, sliced
• 250 gram grape tomatoes, halved
• 1/2 cup flat-leaf parsley leaves
• 4 green shallots, thinly sliced
• 1 tablespoon lemon juice
• 1 tablespoon vegetable or olive oil
• lemon wedges, to serve