Preheat oven to 450. Brush large baking sheet with 2 tsp of olive oil.
Arrange cut zucchini in a single layer on baking sheet. Brush each one with remaining olive oil and sprinkle with Italian seasoning. Roast Zucchini for 10 minutes or until Zucchini is barely starting to soften when you pierce with a fork.
Remove zucchini form the oven and turn oven to broil with rack 4 inches from heating element. Brush the tops of the zucchini with pesto and sprinkle with parmesan cheese.
Place baking sheet under the broiler and watch carefully as these can burn quickly. Broil until the cheese is melted and is starting to turn brown. 2-3 minutes.