Preheat your air fryer to 375°F (190°C).
In a shallow bowl, whisk the egg until completely smooth.
In a separate shallow dish, combine the almond flour, dried oregano, dried thyme, garlic powder, sea salt, and black pepper.
Dip the chicken breast into the egg wash, then dredge it through the almond flour mixture, pressing firmly to ensure an even, thick coating.
Lightly coat the air fryer basket with the olive oil and place the breaded chicken inside.
Air fry the chicken for 12-15 minutes, flipping halfway through, until the internal temperature reaches 165°F and the crust is golden brown.
While the chicken cooks, steam or lightly sauté the broccoli florets until tender-crisp.
Serve the crispy chicken hot, finished with a fresh squeeze of lemon juice over the chicken and broccoli.