Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Trim the woody ends off the asparagus and place them on the baking sheet. Drizzle with half of the olive oil and a pinch of salt and pepper.
In a shallow dish, whisk together the almond flour, dried oregano, garlic powder, lemon zest, remaining salt, and remaining pepper.
Pat the chicken breast dry with a paper towel and dredge it through the almond flour mixture, pressing firmly so the coating adheres to both sides.
Heat the remaining olive oil in a large oven-safe skillet over medium-high heat.
Place the chicken in the skillet and sear for 3-4 minutes until the crust is golden brown and crispy, then flip the breast.
Transfer the skillet and the asparagus baking sheet to the oven. Roast for 10-12 minutes or until the chicken reaches an internal temperature of 165°F.
Remove from the oven and drizzle the fresh lemon juice over both the chicken and the asparagus before serving.