Preheat oven to 400°.
Place 24 artichokes in a colander, pressing with the back of a spoon to remove juice from artichokes; set aside. (Reserve any remaining artichokes for another use.)
Combine egg whites and next 5 ingredients (egg whites through pepper); stir with a whisk. Coat a large nonstick skillet with cooking spray; place over medium-high heat. Working with 1 artichoke at a time, dredge artichokes in flour and dip in egg white mixture. Add 12 artichokes to skillet; cook 3 minutes turning to brown on all sides. Remove artichokes from skillet; place on a baking sheet coated with cooking spray. Set aside. Repeat procedure with remaining 12 artichokes and egg white mixture.
Bake at 400° for 15 minutes or until hot. Serve over hot pasta and heated marinara sauce. Sprinkle with parsley.