Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Chop the broccoli into small florets, slice the bell pepper into strips, and dice the red onion.
Toss the vegetables on the baking sheet with 0.5 tbsp of olive oil and a pinch of the sea salt and black pepper.
Roast the vegetables for 15-20 minutes until they are tender and show slight charred edges.
While the vegetables roast, season the chicken breast evenly on both sides with smoked paprika, garlic powder, and the remaining salt and pepper.
Heat the remaining 0.5 tbsp of olive oil in a large skillet over medium-high heat.
Place the chicken in the skillet and sear for 5-7 minutes per side, or until the internal temperature reaches 165°F and the outside is golden brown.
Remove the chicken from the heat and let it rest for 3 minutes before slicing.
Plate the juicy seared chicken alongside the roasted vegetable medley and serve immediately.