Preheat your oven to 400°F and lightly grease a baking sheet with the extra virgin olive oil.
In a shallow bowl, whisk the half egg until smooth.
In a separate shallow dish, combine the almond flour, parmesan cheese, garlic powder, dried oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, ensuring it is fully coated, then dredge it through the almond flour mixture, pressing firmly so the breading adheres.
Place the breaded chicken on the prepared baking sheet and bake for 15 to 18 minutes, or until the internal temperature reaches 165°F and the crust is golden.
Remove from the oven and spoon the marinara sauce over the center of the chicken, then sprinkle with the shredded mozzarella cheese.
Return the chicken to the oven under the broiler for 2 to 3 minutes until the cheese is melted and bubbly.
Garnish with freshly chopped basil and serve immediately.