Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Trim the ends off the Brussels sprouts and cut them in half lengthwise.
Place the sprouts on the baking sheet and toss with olive oil, sea salt, black pepper, and garlic powder until evenly coated.
Roast the Brussels sprouts for 20-25 minutes, flipping halfway through, until they are tender and have developed a deep golden-brown char.
While the sprouts roast, place the prosciutto slices in a cold skillet over medium heat and cook until crispy, then remove and crumble into pieces.
Season the chicken breast with a pinch of salt and pepper, then sear in the same skillet for 5-7 minutes per side until the internal temperature reaches 165°F.
Slice the chicken into bite-sized strips and combine in a bowl with the roasted sprouts and crispy prosciutto.
Drizzle the balsamic glaze over the mixture and toss gently to coat before serving warm.