Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Halve the baby potatoes and trim the tough, woody ends off the asparagus spears.
Place the chicken breast, halved potatoes, and trimmed asparagus onto the prepared baking sheet.
Drizzle the extra virgin olive oil over the chicken and vegetables, ensuring everything is lightly coated.
Sprinkle the dried oregano, garlic powder, sea salt, and black pepper evenly over all components.
Squeeze the juice from the lemon half over the tray, then place the spent lemon hull on the sheet to infuse more aroma while roasting.
Toss the potatoes and asparagus to distribute the seasoning, then arrange everything in a single layer so it roasts evenly.
Bake for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are golden and tender.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep it juicy and flavorful.