Beat the egg in a bowl, season with salt and pepper and toss in the chicken breast. Mix with a spoon to cover all sides of the chicken with the beaten egg.
Prepare a flat dish. Spread the Parmesan cheese, almond flour, garlic powder, dried basil, and dried oregano on the dish. Make sure that the ingredients are mixed. Coat the chicken breast on all sides with the flour mixture.
Transfer to a baking sheet and leave in the oven for around 25 minutes. Remove once the crust turns golden brown in color.
Spread the marinara sauce and mozzarella cheese on top of the cooked chicken. Return to the oven for an additional 10 minutes to melt the cheese completely.
Garnish with some chopped cilantro on top. Serve in a plate and enjoy!