1. Preheat the oven to 400°F (200°C).

2. In a shallow bowl, beat the eggs.

3. Dip each chicken breast into the beaten eggs, then coat it with breadcrumbs.

4. Heat some oil in a large skillet over medium heat.

5. Cook the breaded chicken breasts for about 3-4 minutes on each side or until golden brown.

6. Transfer the chicken breasts to a baking dish and spread marinara sauce over each breast.

7. Sprinkle shredded mozzarella cheese on top of the marinara sauce.

8. Bake in the preheated oven for 20 minutes or until the chicken is cooked through and the cheese is melted and bubbly.

9. Serve hot with pasta or salad.