Mix together the jerk seasoning, olive oil and lime juice. Toss the chicken in it and leave to marinate in the fridge for at least 20 mins, or up to 24 hours.
Make the salsa by mixing all the ingredients together with some seasoning - add a chopped red chilli if you like extra heat.
Heat the grill or barbecue to Medium. Thread the chicken onto 8 metal skewers divided by the yellow peppers - aim for 3 of each per skewer. Cook for 8 mins each side until cooked through and lightly charred. Serve with the salsa and rocket leaves.