Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
In a shallow bowl, whisk together the almond flour, lemon zest, dried thyme, dried rosemary, garlic powder, sea salt, and black pepper.
Pat the chicken breast dry with a paper towel, then press it firmly into the almond flour mixture until it is thoroughly and evenly coated on both sides.
Trim the woody ends off the asparagus spears and place them on the prepared baking sheet, tossing them with 0.5 tbsp of the olive oil and a pinch of salt.
Heat the remaining 0.5 tbsp of olive oil in a large oven-safe skillet over medium-high heat.
Once the pan is hot, add the chicken breast and sear for 3-4 minutes until the crust is golden brown and crispy.
Flip the chicken, then transfer the skillet to the oven along with the baking sheet of asparagus.
Roast for 10-12 minutes, or until the chicken reaches an internal temperature of 165°F and the asparagus is tender and slightly charred.
Remove from the oven and drizzle the fresh lemon juice over both the chicken and asparagus before serving hot.