Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.

In a shallow dish, mix together the almond flour, Parmesan cheese, garlic powder, Italian seasoning, salt, and pepper.

Coat each chicken breast in the mixture until fully covered. Place them on the prepared baking sheet.

Spray the coated chicken with olive oil to help it crisp up in the oven.

Bake in the preheated oven for about 20 minutes, or until the chicken is cooked through and has reached an internal temperature of 165°F (75°C).

During the last 5 minutes of baking, remove the chicken from the oven, top it with marinara sauce and shredded mozzarella cheese, then return it to the oven until the cheese is melted and bubbly.

While the chicken is baking, sauté fresh spinach in a pan with a little olive oil over medium heat until wilted.

In a bowl, layer the sautéed spinach as the base, then place the cheesy marinara chicken on top.

Garnish with fresh basil, if desired, and a few red pepper flakes for an optional kick.