Preheat your oven to 425°F.
Pound the chicken breast slightly to even thickness for quick and uniform cooking.
Lightly season the chicken with salt and pepper (if desired).
In a shallow bowl, whisk the egg white until slightly frothy.
In another bowl, place the almond flour.
Dip the chicken breast first into the egg white, then dredge evenly in almond flour to coat.
Place the breaded chicken on a lightly greased baking sheet or a rack over a baking sheet.
Bake the chicken in the preheated oven for about 15-18 minutes or until the internal temperature reaches 165°F.
Heat the tomato sauce in a small saucepan over medium heat until warmed through.
Once the chicken is baked, spoon the warm tomato sauce over the top of each piece, and sprinkle with grated parmesan cheese.
Return the chicken to the oven for an additional 3-5 minutes to allow the flavors to meld and the cheese to melt slightly.
Garnish with fresh basil sprigs before serving.