Barbecued cajun chickens with spicy tomato salsa

Ingredients

• 6 chickens (3kg)
• 2 tablespoons olive oil
• 1 brown onion (80g), grated coarsely
• 2 cloves garlic, crushed
• 2 tablespoons sweet paprika
• 2 teaspoons ground cinnamon
• 2 teaspoons ground fennel
• 2 teaspoons dried oregano
• 6 egg (plum) tomatoes (540g), halved
• 1 tablespoon olive oil
• 1 brown onion (150g), chopped finely
• 1 tablespoon sweet paprika
• 1 teaspoon smoked paprika
• 1 tablespoon red wine vinegar
• 1 fresh long red chilli, chopped finely