Before the Summer we visited friends for a BBQ and learnt so many new tricks! One of which was getting one a Weber metal basket for the top of your grill. That way you can grill all your roasted veggies but they don’t get burnt or stuck! It has worked wonders and now I chop up all sorts of courgettes, peppers, red onions and add argula/flat parsley/salt and pepper for seasoning. Then just sprinkle a bit of olive oil and place the basket on top of the grill and get cooking!
The weber metal basket I found at DO IT AND GARDEN.