Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Place the broccoli florets on the baking sheet, drizzle with 0.5 tbsp of olive oil, and sprinkle with half of the sea salt and black pepper.
Roast the broccoli for 15-20 minutes until the edges are charred and tender.
While the broccoli roasts, season the chicken breast evenly with the remaining sea salt, black pepper, dried rosemary, and dried thyme.
Heat the remaining 0.5 tbsp of olive oil in a large skillet over medium-high heat. Add the chicken breast and sear for 5-7 minutes per side until golden brown and cooked through.
Reduce the heat to low, add the minced garlic to the skillet, and sauté for 30 seconds until fragrant.
Pour the lemon juice over the chicken, scraping up any browned bits from the pan to create a light glaze.
Serve the crispy chicken alongside the roasted broccoli, drizzling any remaining lemon-garlic pan juices over the top.