Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Trim the stems from the Brussels sprouts and slice them in half vertically to maximize the surface area for browning.
Toss the sprouts on the baking sheet with olive oil, sea salt, and black pepper until evenly coated.
Roast the sprouts for 20 to 25 minutes, tossing once halfway through, until they are tender and the outer leaves are charred and crispy.
While the sprouts roast, place the diced pancetta in a cold medium skillet and turn the heat to medium, rendering the fat until the pancetta is golden brown.
Remove the pancetta with a slotted spoon, then season the chicken breast with garlic powder and sear it in the same skillet for 5-7 minutes per side until fully cooked.
Allow the chicken to rest for 5 minutes before slicing it into thin strips.
In a large bowl, combine the roasted sprouts, crispy pancetta, and sliced chicken, then drizzle with the balsamic glaze and toss gently to coat before serving.