Charcoal Chicken with Grilled Corn and Potatoes

Ingredients

• 2 kg kilograms whole chicken
• 6 tsp teaspoons olive oil, divided
• 3 tsp teaspoons sea salt, divided
• 5 ½ tsp 1½ teaspoon freshly ground black pepper, divided
• 400 g grams baby potatoes
• 4 cobs of corn, shucked
• 1 l lemon, halved
• ¾ tsp teaspoon garlic granules
• ¾ tsp teaspoon ground cumin
• ¾ tsp teaspoon smoked paprika
• 2 ¾ tsp teaspoon sea salt
• ¾ tsp teaspoon freshly ground black pepper
• ¾ tsp teaspoon mustard powder
• ½ tsp teaspoon chilli flakes
• ½ tsp teaspoon caster sugar