Oven-Baked Fish and Chips

• 300 g hoki fish fillets
• 1 egg, lightly whisked
• 0.5 cup wholegrain bread crumbs
• 400 g white potatoes washed, cut into wedges
• 1 tbsp extra virgin olive oil
• 100 g mixed leaves
• 1 lebanese cucumber, diced
• 1 tomato, diced
• 0.5 avocado, peeled and diced
• 50 g danish feta, crumbled