Portuguese-style barbecued chicken with lemon potatoes

Ingredients

• 1 free-range chicken, butterflied (see recipe tip)
• 1 kilogram par-boiled small potatoes, thickly sliced
• 3 small lemons, halved
• 3 tablespoons olive oil
• sea salt, to serve
• Marinade
• 3 garlic cloves, peeled
• 1 small shallot, roughly chopped
• 1/2 red capsicum, de-seeded, roughly chopped
• 1 bird’s eye or other small hot red chilli pepper, deseeded and chopped
• small handful fresh parsley or coriander
• 1 teaspoon paprika, smoked or regular
• 1 teaspoon dried oregano
• zest and juice of 1 lemon
• 2 tablespoons red wine vinegar
• 1 teaspoon sea salt