The secret to good zucchini is to marinate it. If you do you can get all that bitter water out of it and it tastes sweet and almost nutty. It's amaaaazing.. Okay here's how you do it..
Chop the zucchini's in half, and then into sticks. They look like triangle blocks if that makes sense. Put them in a ziplock bag with some olive oil, garlic powder, dried parsley and salt. Let them sit for at least 20 minutes. Grill for a few minutes on each side until they are soft all the way through. Omg.. It's like fried zucchini only without the calories.
You can add bell peppers and yellow squash to this marinade and it works wonderfully!