Preheat your oven to 400°F and line a baking sheet with parchment paper.
Pat the chicken breast dry and, if needed, pound it to an even thickness for uniform cooking.
In a shallow bowl, whisk the egg until smooth.
In a separate bowl, combine almond flour, garlic powder, paprika, salt, and black pepper.
Dip the chicken breast into the egg wash, ensuring it is fully coated, then dredge it in the almond flour mixture, pressing lightly to adhere the crust.
Place the coated chicken breast on the prepared baking sheet.
Bake in the preheated oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the almond crust is golden and crispy.
Allow the chicken to rest for a few minutes before slicing and serving.