Preheat your oven to 425°F and line a sheet pan with parchment paper.
Place the chicken breast and broccoli on the sheet pan.
In a small bowl, whisk together olive oil, lemon juice, thyme, parsley, garlic powder, salt, and pepper.
Drizzle the mixture evenly over the chicken and broccoli, ensuring everything is well-coated.
Arrange the chicken and broccoli in a single layer to ensure even roasting.
Roast in the preheated oven for about 20-25 minutes, or until the chicken reaches an internal temperature of 165°F and the broccoli edges turn crispy.
Optionally, broil for an additional 2-3 minutes to add extra crispness to the broccoli.
Remove from the oven and let the chicken rest for a few minutes before serving.