Preheat your oven to 400°F and line a large sheet pan with parchment paper for easy cleanup.
Pat the chicken breast completely dry with a paper towel to ensure the skin becomes perfectly crispy during roasting.
In a small bowl, whisk together the olive oil, minced garlic, finely chopped rosemary, thyme, sea salt, and black pepper.
Place the chicken breast, cubed sweet potatoes, and broccoli florets on the prepared baking sheet in a single layer.
Drizzle the herb-infused oil over the chicken and vegetables, tossing the produce to coat evenly and rubbing the oil into the meat.
Arrange thin slices of lemon over the chicken and vegetables for a bright citrus infusion.
Roast for 20 to 25 minutes until the chicken reaches an internal temperature of 165°F and the vegetables are tender and browned.
Let the chicken rest for 5 minutes before slicing to keep the meat juicy and flavorful.