Dip chicken pieces in egg mix, then into bread crumbs.
Drop into deep fryer or a pan with hot oil on stove top.(If using stove, use a high-walled pot and make sure oil is at least three inches deep.
Place half of the chicken tenders into oil one at a time. Cook until golden brown and cooked through center. Scoop out with a slotted spoon and set aside on paper towel covered plate. Repeat with remaining chicken.
Arrange chicken on a microwave-safe dish. Preheat marinara sauce, then place a spoonful on each nugget. Sprinkle mozzarella cheese on top of sauce. Microwave on high until cheese melts (about 20-30 seconds).
Sprinkle with grated Parmesan cheese. Insert a toothpick into each bite. Arrange on a serving platter and enjoy!