Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Mince the garlic, rosemary, and thyme, then whisk them together in a small bowl with the olive oil, lemon juice, lemon zest, salt, and pepper.
Wash and quarter the red potatoes into bite-sized pieces and trim the tough woody ends off the asparagus spears.
Place the chicken breast, potatoes, asparagus, and cherry tomatoes onto the prepared baking sheet in a single layer.
Drizzle the lemon-herb oil mixture over all components, using your hands or a brush to ensure the chicken and vegetables are 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 fork-tender.
Remove from the oven and let the chicken rest for 5 minutes before slicing to keep it juicy and flavorful.