Preheat your oven to 400°F and line a baking sheet with parchment paper for easy cleanup.
Spiralize the zucchini into thin noodles and place them on a paper towel to drain any excess moisture.
In a shallow bowl, whisk the egg until smooth. In a separate bowl, combine the almond flour, parmesan cheese, dried oregano, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then dredge it through the almond flour mixture, pressing firmly so the coating adheres to all sides.
Place the chicken on the prepared baking sheet and bake for 15 to 20 minutes until the crust is golden and the chicken is cooked through.
While the chicken bakes, heat olive oil in a small skillet over medium heat. Sauté the minced garlic for 1 minute, then stir in the tomato puree and simmer for 5 minutes.
Spoon a portion of the tomato sauce over the baked chicken and top with the mozzarella cheese. Broil for 2 minutes until the cheese is bubbly and slightly browned.
Toss the zucchini noodles into the remaining warm sauce in the skillet for 1 minute until just tender, then serve the chicken parmesan over the zesty noodles.