Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Wash and halve the baby potatoes, slice the zucchini into thick half-moons, and trim the woody ends off the asparagus.
In a small bowl, whisk together the extra virgin olive oil, the juice of half a lemon, minced garlic, dried oregano, sea salt, and black pepper.
Place the chicken breast on one side of the sheet pan and arrange the potatoes, zucchini, and asparagus on the remaining space.
Drizzle the lemon-herb oil mixture over the chicken and vegetables, tossing the produce gently to ensure everything is evenly coated.
Roast in the center of the oven 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. Serve immediately with the roasted vegetables.