Cut the potatoes into 2cm cubes. Cook the potatoes for about 5 minutes and drain. The potatoes won’t be fully cooked at this stage.
Take a skewer and thread on a potato followed by a slice of sweetcorn, pineapple, courgette and red onion and repeat finishing with a potato. Repeat for the three remaining skewers.
Mix all the spices together with the oil and brush all over the potatoes and vegetables using a pastry brush. Season with a little salt. Cook under a pre-heated grill or on the BBQ for 8 to 10 minutes until the potatoes are cooked, and the other vegetables are nicely charred.