Marinated crispy fish strips with oven-baked chips

Ingredients

• 1/4 cup mayonnaise
• 2 tablespoons lemon juice
• 1 tablespoon whole grain mustard
• 1/2 teaspoon celery salt
• 3 or 4 firm white fish fillets (approx. 400-500g)
• 3 or 4 Agria potatoes, scrubbed and cut into even-sized wedges
• 1 teaspoon all-purpose seasoning
• 2 cups panko breadcrumbs
• 1 teaspoon sesame seeds
• 1 tablespoon capers, chopped
• 1 tablespoon parsley, chopped
• 1/2 small red onion, finely diced
• 1 tablespoon olive oil
• 1 lemon, cut into wedges, to serve
• spray oil