Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Slice the carrots into 1/4-inch rounds and break the broccoli into uniform florets to ensure they cook at the same rate.
Cut the chicken breast into even 1-inch cubes to keep them juicy while roasting.
In a large mixing bowl, combine the chicken, broccoli, and carrots, then drizzle with the extra virgin olive oil.
Add the dried rosemary, dried thyme, minced garlic, sea salt, and black pepper to the bowl and toss thoroughly until everything is well-coated.
Spread the mixture onto the prepared baking sheet in a single layer, making sure not to overcrowd the pan so the vegetables roast rather than steam.
Roast in the center of the oven for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender with slightly browned edges.
Remove from the oven and serve immediately while the flavors are fresh and the chicken is hot.