Preheat your oven to 400°F and line a large rimmed baking sheet with parchment paper.
Cut the chicken breast into even 1-inch bite-sized pieces for uniform cooking.
In a large mixing bowl, whisk together the olive oil, lemon juice, minced garlic, oregano, thyme, sea salt, and black pepper.
Add the chicken pieces and broccoli florets to the bowl, tossing thoroughly until every piece is evenly coated in the herb marinade.
Spread the chicken and broccoli in a single layer on the prepared baking sheet, ensuring they are not overcrowded to allow for proper roasting.
Roast for 18-22 minutes, or until the chicken is cooked through and the broccoli edges are tender and slightly charred.
Remove from the oven and serve immediately, optionally garnished with fresh lemon wedges.