Preheat oven to 375 degrees F.
In a mixing bowl. Combine softened cream cheese, drained spinach, 1 cup Mozzarella, and Parmesan cheese.
Season with salt and pepper, to taste.
Cut each chicken breast in half to make them around 1/4-inch thick.
Place a few tablespoons of spinach mixture on the widest end of each chicken breast.
Roll up and secure closed with toothpicks; set aside.
In a small mixing bowl, whisk eggs; set aside.
Crush Ritz crackers in a small resealable bag, pour into a small mixing bowl and set aside.
Dip each chicken bundle in egg until coated, then roll in cracker crumbs and place seam side down in a
9 x 13 inch baking dish sprayed with nonstick cooking spray.
Bake for 30 minutes.
Remove from oven, carefully remove all toothpicks, and spoon 2 tablespoons of marinara on top of each chicken bundle and top with a sprinkle of the remaining mozzarella cheese.
Return to the oven and bake for an additional 10 minutes.