Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim the woody ends off the asparagus and spread the spears in a single layer on the prepared baking sheet.
Drizzle the asparagus with 0.5 tbsp of olive oil and season with a pinch of sea salt and black pepper.
Roast the asparagus for 12-15 minutes until they are tender and slightly charred at the tips.
While the asparagus is roasting, season both sides of the chicken breast with the remaining sea salt, black pepper, and dried oregano.
Heat the remaining 1 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, or until the internal temperature reaches 165°F.
During the final 2 minutes of cooking the chicken, add the minced garlic to the skillet and sauté until fragrant.
Turn off the heat and pour the lemon juice and lemon zest over the chicken, swirling the pan to create a light glaze.
Serve the chicken alongside the roasted asparagus and garnish with freshly chopped parsley.