Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Place the broccoli florets, sliced red bell pepper, and diced red onion on the baking sheet.
Drizzle the vegetables with half of the olive oil and sprinkle with the dried oregano and half of the sea salt.
Toss the vegetables to coat evenly and roast in the oven for 18-20 minutes until tender and slightly charred.
While vegetables roast, season the chicken breast on both sides with turmeric, the remaining sea salt, and black pepper.
Heat the remaining olive oil in a large skillet over medium-high heat.
Add the chicken to the skillet and sear for 5-7 minutes per side, or until the exterior is golden brown and the internal temperature reaches 165°F.
In a small bowl, whisk together the lemon juice and minced garlic.
Remove the skillet from heat and drizzle the lemon-garlic mixture over the chicken, allowing the residual heat to mellow the garlic.
Serve the golden chicken alongside the zesty roasted vegetables.