Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Peel and dice the sweet potato into 1/2-inch cubes and chop the red bell pepper into bite-sized pieces.
Place the sweet potato, broccoli florets, and bell pepper on the baking sheet, then toss with 0.5 tablespoon of olive oil and a pinch of sea salt.
Roast the vegetables in the oven for 20-25 minutes until the sweet potatoes are golden and tender.
While the vegetables roast, season the chicken breast evenly on both sides with dried oregano, garlic powder, sea salt, and black pepper.
Heat the remaining 0.5 tablespoon of olive oil in a skillet over medium-high heat.
Add the chicken to the skillet and sear for 6-7 minutes per side, or until the internal temperature reaches 165°F and the exterior is golden brown.
Remove the chicken from the heat and drizzle with fresh lemon juice.
Serve the lemon-herb chicken alongside the roasted vegetable medley for a clean, balanced meal.