Grigliata mista is a mixed grill. You’ll see grigliata mista di carne (mixed meats, as shown in the picture), grigliata mista di frutti di mare (mixed fish and shellfish) or grigliata mista di pesche (mixed fish).
The meats are usually chosen from pork, pork sausage, lamb, chicken, and beef. It’s always a lot of food.