Preheat your oven to 400°F (200°C) and prepare a baking sheet by lining it with parchment paper.
Wash the asparagus and trim off the woody bottom ends.
Place the asparagus on the baking sheet and toss with 0.5 tablespoon of olive oil, minced garlic, 0.25 teaspoon of sea salt, and a pinch of black pepper.
Roast the asparagus in the oven for 12 to 15 minutes, or until they reach a crisp-tender consistency with slight charring.
While the asparagus roasts, season both sides of the chicken breast with the dried oregano and the remaining sea salt and black pepper.
Heat the remaining 0.5 tablespoon of olive oil in a medium skillet over medium-high heat.
Place the chicken in the hot skillet and sear for 6 to 7 minutes per side, ensuring the internal temperature reaches 165°F.
Remove the chicken from the pan and let it rest for 3 minutes to lock in the juices.
Plate the chicken alongside the roasted asparagus and drizzle the fresh lemon juice over both components before serving.