Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the chicken breast into one-inch bite-sized pieces.
Chop the broccoli into small florets, slice the bell pepper into strips, and slice the carrots into rounds.
Mince the garlic cloves finely.
In a large mixing bowl, whisk together the olive oil, minced garlic, rosemary, thyme, sea salt, and black pepper.
Add the chicken and all the vegetables to the bowl, tossing thoroughly until everything is evenly coated in the herb oil.
Spread the mixture in a single layer on the prepared baking sheet, ensuring nothing is overcrowded.
Roast for 20 to 25 minutes until the chicken is cooked through and the vegetables are tender and slightly caramelized.
Remove from the oven and drizzle with fresh lemon juice before serving.