We a lot of zucchini at my house. There are few vegetables that my kids like so I have come up with various ways to prepare it. Salad, zucchini, asparagus and of course potatoes are about the only ones I can get them to eat. But any type of grilled zucchini they devour. The other stuff is for me!
Ingredients
2 medium zucchini, sliced into 1/4 inch coins
1 quart grape/cherry tomatoes
1 large red onion, halved and then quartered
Place all veggies on skewers and grill on preheated grill until a slight char has formed on edges of zucchini and onion, tomatoes will have blistered some.
This is a pic of them as soon as I put them on the grill

After grilling take them off skewers and place in bowl with 1/3 cup chopped feta cheese and top with dressing
1/4 cup extra virgin olive oil
1/4 cup combination of fresh chopped parsley and oregano
Juice of 1 lemon
Salt and Pepper to taste
Whisk dressing ingredients together until emulsified, pour over veggies and feta. Mix together and serve.
