Preheat your oven to 400°F and line a small baking sheet with parchment paper.
Place the chicken breast between two sheets of parchment paper and pound with a meat mallet until it is an even half-inch thickness.
In a shallow dish, whisk together the almond flour, garlic powder, dried oregano, sea salt, and black pepper.
Brush both sides of the chicken with the extra virgin olive oil, then dredge the chicken in the almond flour mixture, pressing to adhere.
Place the chicken on the prepared baking sheet and bake for 15 minutes.
Remove from the oven, top the chicken with the marinara sauce, mozzarella cheese, and parmesan cheese.
Return to the oven for another 5-7 minutes, or until the cheese is melted and bubbly and the chicken reaches an internal temperature of 165°F.
While the chicken finishes baking, steam the broccoli florets until tender-crisp, about 4-5 minutes.
Serve the baked chicken parmesan immediately alongside the steamed broccoli.