Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Halve the baby potatoes and toss them in a small bowl with 0.5 tbsp of olive oil and a small pinch of the salt and pepper.
Spread the potatoes on the sheet pan and roast for 10 minutes to give them a head start.
While potatoes roast, mince the garlic and combine it with the lemon zest, dried oregano, and the remaining salt and pepper.
Rub the herb mixture over the chicken breast until evenly coated on all sides.
Remove the pan from the oven, move the potatoes to one side, and place the chicken and trimmed asparagus on the other side.
Drizzle the asparagus with the remaining 0.5 tbsp of olive oil and the fresh lemon juice.
Return the pan to the oven and roast for 15 to 20 minutes, or until the chicken reaches an internal temperature of 165°F.
Let the chicken rest for 5 minutes before slicing to keep it juicy and flavorful.