Preheat your oven to 400°F (200°C).
On a large baking sheet, toss the broccoli florets with 0.5 tablespoons of olive oil, 0.125 teaspoons of sea salt, and 0.125 teaspoons of black pepper.
Roast the broccoli for 15 to 20 minutes until the edges are tender and slightly charred.
Season the chicken breast evenly on both sides with the dried oregano and the remaining sea salt and black pepper.
Heat the remaining 0.5 tablespoons of olive oil in a medium skillet over medium-high heat.
Place the chicken in the skillet and sear for 6 to 7 minutes per side, or until the internal temperature reaches 165°F.
Add the minced garlic clove to the skillet during the last minute of cooking, stirring until fragrant.
Pour the lemon juice into the skillet to deglaze, scraping up any browned bits, and spoon the juices over the chicken.
Garnish the chicken with fresh parsley and serve immediately alongside the roasted broccoli.