Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Trim and halve the Brussels sprouts, then toss them on the baking sheet with the olive oil, sea salt, and black pepper.
Roast the sprouts for 20-25 minutes, shaking the pan halfway through, until they are tender and beautifully charred.
While the sprouts roast, season the chicken breast with a pinch of salt and sear in a non-stick skillet over medium-high heat until cooked through.
Remove the chicken from the pan, let it rest for 5 minutes, and then slice it into bite-sized strips.
In the same skillet, add the prosciutto pieces and cook for 2-3 minutes until they become crispy and golden.
Transfer the roasted sprouts, sliced chicken, and crispy prosciutto to a large mixing bowl.
Drizzle the balsamic glaze over the mixture and toss gently to ensure every piece is coated in the sweet and tangy sauce.