I was over at a friend's house a few months ago and we munched on this zuchini.  It was delicious. 

three zucchinis, cut lengthwise and in half
1/2 teaspoon salt
1/2 teaspoon garlic powder
one teaspoon lemon pepper
1/2 cup shredded mozzarella cheese
olive oil

Coat zucchini with oil.  Sprinkle with salt, garlic powder, lemon pepper. Grill over medium direct heat 2-3 minutes per side, don’t overcook or zucchini will get mushy.  Sprinkle with cheese.  As soon as cheese is melted, remove from grill and serve.

To make the corn shown above, just cover in olive oil and sprinkle with salt.  Grill 10 - 15 minutes over direct medium heat.