Preheat your oven to 450 degrees F. This temperature is perfect for roasting and helps the chicken develop a lovely golden crust.
Line a large sheet pan with parchment paper if desired. This makes for easy cleanup and prevents sticking.
Season the chicken with balsamic vinegar, extra-virgin olive oil, garlic, basil, parsley, and kosher salt. Make sure to coat the chicken evenly and let it marinate while you prep the vegetables.
In a large bowl, toss the remaining vegetables: red bell pepper, zucchini, asparagus, red onion, and cauliflower florets with balsamic vinegar, olive oil, kosher salt, black pepper, basil, and parsley. Ensure everything is well-coated.
Spread the seasoned vegetables out onto the sheet pan. Make sure they’re in a single layer to allow for even roasting.
Nestle the marinated chicken among the vegetables. This allows the flavors to meld together beautifully while cooking.
Roast in the lower rack of the oven for about 20 minutes, or until the chicken is cooked through and the vegetables are tender. The chicken should reach an internal temperature of 165 degrees F.
Keep an eye on the dish as it cooks. You want the vegetables to be slightly charred yet tender and the chicken to have a golden brown exterior.
Once done, remove the pan from the oven and let it rest for a few minutes. This resting period allows the juices to redistribute within the chicken, keeping it moist.
Serve the Sheet Pan Balsamic Herb Chicken and Vegetables right away while hot. It’s a meal that’s perfect for sharing!