Preheat your oven to 400°F and line a baking sheet with parchment paper.
Whisk the egg in a shallow bowl. In a separate shallow bowl, combine the almond flour, parmesan cheese, dried oregano, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then coat it thoroughly in the almond flour mixture, pressing the coating firmly onto the meat.
Place the breaded chicken on the prepared baking sheet and bake for 15 minutes.
Remove the chicken from the oven, spoon the marinara sauce over the top, and sprinkle with the mozzarella cheese.
Return the chicken to the oven and bake for an additional 5 to 7 minutes until the cheese is melted and bubbly and the chicken is cooked through.
While the chicken finishes, steam the broccoli until tender-crisp and toss with the extra virgin olive oil and a pinch of salt.
Serve the crispy chicken parmesan alongside the steamed broccoli for a complete, clean meal.