heat oven to 375. in a skillet, zucchini, onion and parsley in butter, about 10 minutes, or until tender. stir in seasonings. in a large bowl, beat eggs and cheese. mix egg mixture with vegetable mixture. separate crescent roll dough into triangles. press dough into bottom and up sides of pie pan. spread mustard over dough. pour mixture into pie crust. bake at 375 for 18-20 minute let sit 10 minute before serving. cut int wedges. serve hot.