Pre-heat the oven to 400 degrees. Line a baking sheet with parchment paper or aluminum foil and set aside.

Place the chicken breasts on a cutting board. Using a meat mallet, pound the breasts to a ¼ inch thickness. Divide the provolone, prosciutto and spinach between the two breasts and layer them across the surface. Starting with a short side, roll each breast up and seal the edges shut using a few toothpicks.

Place the rolled and sealed breasts in a Ziploc bag and add the flour. Lightly flip the bag around until chicken is coated. Place the beaten egg white in a shallow dish and the breadcrumbs in a second shallow dish. Remove each rolled breast from the flour bag and dip it in the egg white, turning to coat. Then move the coated breast to the breadcrumb dish and coat it with crumbs on all sides. Place the completed rolls seam side down on the prepared baking sheet. Lightly mist the tops of the breaded breasts with olive oil cooking spray.

Bake for 30-35 minutes. Don’t forget to remove the toothpicks before serving!