In a small bowl, combine cracker crumbs and butter. Press onto the bottom of a greased 9-in. springform pan. Sprinkle with cheddar cheese. In a large skillet, saute the zucchini, mushrooms, onion and red pepper in oil until tender. Spoon over cheese. , In a large bowl, beat cream cheese until smooth. Add eggs; beat on low speed just until combined. Stir in bacon. Pour over vegetable mixture. Sprinkle with Parmesan cheese. , Place pan on a baking sheet. Bake at 375° for 30-35 minutes or until center is almost set. Cool on a wire rack for 10 minutes. Carefully run a knife around edge of pan to loosen; remove sides of pan. Serve warm or chilled. Refrigerate leftovers.