Preheat your oven to 400°F and line a baking sheet with parchment paper.
Toss the broccoli florets with a pinch of sea salt and roast for 15 minutes until the edges are slightly crisp and tender.
Place the chicken breast between two sheets of parchment paper and pound to a half-inch thickness to ensure even cooking.
Whisk the egg in a shallow dish; in a separate dish, combine the almond flour, parmesan cheese, garlic powder, oregano, salt, and pepper.
Dip the chicken into the egg wash, then coat thoroughly in the parmesan mixture, pressing firmly to ensure the crust adheres.
Heat the olive oil in a skillet over medium heat and sear the chicken for 5-6 minutes per side until the exterior is golden and crispy.
Warm the marinara sauce in a small saucepan over low heat until simmering.
Spread the warm sauce on a plate, top with the crispy chicken, and serve alongside the roasted broccoli.