Crack the eggs in a bowl and whisk with a fork. Put the bread crumbs on a large plate.
Heat the oil in a large non-stick frying pan over medium-high heat.
Dip each chicken breast in eggs first on both sides, then dip in breadcrumbs on both sides, pressing into the bread crumbs so they stick better.
Put breaded chicken breasts on a frying pan.
Cook for 4 minutes, then carefully flip the chicken, and cook another 4 minutes, or until cooked through.
Preheat oven to 400ยบ. In a large bowl, combine 2 cups mozzarella, Parmesan, garlic, marinara, parsley, and red pepper flakes and season with salt and pepper. Stir until combined, then gently fold in chicken.
Spoon mixture into halved bell peppers and sprinkle with remaining 1 cup mozzarella.
Pour chicken broth into baking dish (to help the peppers steam) and cover with foil.
Bake until peppers are tender, 55 minutes to 1 hour. Uncover and broil 2 minutes.
Notes
If you want to buy a bag of Frozen Breaded Chicken you can, that would cut down on some of the time on this recipe. Just cook it according to the instructions then chunk it into small pieces and you are ready to go.