Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Trim the ends of the Brussels sprouts and cut them in half before placing them on the baking sheet.
Drizzle the sprouts with olive oil and sprinkle with sea salt, black pepper, and garlic powder, tossing until evenly coated.
Roast the Brussels sprouts for 20-25 minutes, tossing halfway through, until the edges are dark and crispy.
While the sprouts roast, place the diced pancetta in a large skillet over medium heat and cook until the fat renders and it becomes crisp.
Add the diced chicken breast to the skillet with the pancetta and sauté for 6-8 minutes until golden brown and cooked through.
In a small bowl, whisk together the balsamic vinegar and honey to create a smooth glaze.
Once the sprouts are done, add them to the skillet with the chicken and pancetta, pour the balsamic mixture over the top, and toss for 1 minute until everything is coated and glossy.