Peel and slice zucchini thinly. Place in saucepan, cover and boil for half hour. Drain and set aside. In large frying pan, combine onion and margarine. Brown onion slightly. Stir in parsley, salt, pepper, garlic powder, basil and oregano. Stir well. Cook on medium heat 5 minutes. Remove from heat. In large bowl, mix eggs and cheese. Add zucchini mixture and parsley mixture. Stir well. Unroll crescent rolls, line 23 cm pie plate or quiche dish with dough. Pour zucchini mixture into pie plate. Bake 10 minutes uncovered then 10 more minutes covered with aluminum foil at 375 degrees. Turn off oven, but leave quiche in oven, 2 to 3 minutes.