Preheat your oven to 400°F and line a baking sheet with parchment paper.
Trim the woody ends from the asparagus and spread them in a single layer on the prepared baking sheet.
Drizzle the asparagus with 0.5 tbsp of olive oil and sprinkle with half of the sea salt and black pepper.
Roast the asparagus for 12-15 minutes until tender and slightly charred.
Season the chicken breast evenly on both sides with dried thyme, dried rosemary, lemon zest, and the remaining sea salt and black pepper.
Heat the remaining 0.5 tbsp of olive oil in a large skillet over medium-high heat.
Place the chicken in the skillet and sear for 6-7 minutes per side until golden brown and the internal temperature reaches 165°F.
Add the minced garlic to the skillet during the final minute of cooking, stirring constantly to avoid burning.
Pour the lemon juice over the chicken to deglaze the pan, then serve the chicken alongside the roasted asparagus.