Salmon Burgers with Grilled Pineapple

2 medium boneless, skinless salmon fillets, roughly chopped
Handful of fresh coriander, finely chopped
1 egg, beaten
1 garlic clove, finely chopped
1 tbsp soy sauce
Juice from half a lemon
1 yellow pepper, roughly chopped
75g Panko breadcrumbs
1 tsp chilli powder
1 tsp ground cumin
1 tbsp of mayonnaise
1 tbsp sweet chilli sauce
Small tin pineapple chunks
Soft baps
Rocket leaves, to serve