Preheat your air fryer to 400°F (200°C).
Wash the Yukon Gold potato and cut it into even wedges. In a small bowl, toss the wedges with 1 teaspoon of olive oil and half of the sea salt, black pepper, garlic powder, and onion powder.
Place the potato wedges in the air fryer basket in a single layer and cook for 12-15 minutes, shaking the basket halfway through.
While the potatoes are cooking, place the chicken breast between two sheets of parchment paper and pound it with a meat mallet until it is an even 1/2-inch thickness.
In one shallow dish, whisk the half egg. In a second shallow dish, combine the almond flour with the remaining garlic powder, onion powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, letting any excess drip off, then press it firmly into the almond flour mixture until fully coated on both sides.
Move the potatoes to one side of the air fryer basket and place the chicken schnitzel on the other side. Lightly spray the top of the chicken with a touch of oil if desired.
Air fry everything together for another 8-10 minutes, flipping the chicken halfway through, until the chicken is golden and reaches an internal temperature of 165°F.
Serve the hot schnitzel with the crispy potatoes and a fresh lemon wedge for squeezing over the chicken.