Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim the woody ends off the asparagus and place them on the prepared baking sheet.
In a shallow bowl, whisk together the almond flour, dried rosemary, dried thyme, garlic powder, sea salt, and black pepper.
Pat the chicken breast completely dry with a paper towel and dredge it through the almond flour mixture, pressing firmly to ensure an even coating on all sides.
Heat half of the olive oil in an oven-safe skillet over medium-high heat. Sear the chicken for 3-4 minutes per side until the crust is golden brown.
While the chicken sears, toss the asparagus with the remaining olive oil, minced garlic cloves, and a squeeze of lemon juice.
Transfer the skillet with the chicken and the baking sheet with the asparagus into the oven.
Roast for 10-12 minutes or until the chicken reaches an internal temperature of 165°F and the asparagus is tender-crisp.
Remove from the oven, garnish with fresh lemon slices, and let the chicken rest for 5 minutes before slicing and serving.