Prep the chicken: Place chicken breasts between parchment sheets and gently pound to an even 1/2-inch thickness. This helps them cook evenly and stay juicy.
Pat dry with paper towels and season both sides with 1/2 teaspoon salt and black pepper.
Set up the dredging station: In one shallow bowl, beat the eggs. In another, mix almond flour, Parmesan, garlic powder, onion powder, Italian seasoning, smoked paprika (if using), and the remaining 1/2 teaspoon salt.
Coat the chicken: Dip each breast into the egg, let excess drip off, then press into the almond flour mixture. Coat both sides and shake off extra.
Set on a plate.
Pan-sear for color: Heat olive oil in a large skillet over medium heat. When hot, add 2 chicken breasts and cook 3–4 minutes per side until golden. Repeat with the remaining chicken, adding a splash more oil if needed.
The chicken will finish cooking in the oven.
Assemble: Preheat oven to 400°F (200°C). Spread a thin layer of marinara in a large baking dish. Nestle the seared chicken on top.
Spoon more marinara over each piece (about 2–3 tablespoons per breast). Sprinkle with mozzarella and a little extra Parmesan.
Bake to finish: Bake 10–12 minutes, until the cheese is melted and bubbly and the chicken reaches an internal temperature of 165°F (74°C). Broil for 1–2 minutes at the end for a golden top, if you like.
Prep the sides: While the chicken bakes, cook your sides.
For zoodles, sauté in olive oil for 2–3 minutes with salt and pepper. For broccoli, roast at 400°F with oil, salt, and pepper for 15–18 minutes. For cauliflower rice, sauté in butter with salt, pepper, and a pinch of garlic powder until tender.
Rest and garnish: Let the chicken rest 5 minutes.
Top with fresh basil for brightness.
Portion for meal prep: Divide chicken and sides into 4 meal prep containers. Spoon any extra sauce from the pan over the chicken to keep it moist.