Pre-heat the oven at 425°F and line the baking sheet pan with parchment paper.
In a large bowl, add cubed sweet potatoes, potatoes, smashed garlic, 1 teaspoon balsamic vinegar, 1 teaspoon honey, salt, few crushes of black pepper, 1 tablespoon olive oil, few sprigs of thyme, and a sprinkle of fresh rosemary leaves. Using hands toss well to combine and coat the vegetables.
Spread the tossed potatoes on lined sheet pan in the even layer. Pop it into the oven and roast for 20 minutes.
Meanwhile, in the same bowl ( we used to toss the potatoes), add zucchini, broccoli florets, bell peppers, onion, remaining balsamic vinegar and honey, season with salt pepper, olive oil, and the remaining herbs. Toss well to combine and coat.
After 20 minutes, carefully remove the sheet pan using gloves or kitchen towel, add and spread the remaining coated vegetables in even layer using a spatula.
Pop the sheet pan back into the oven and roast for another 15-20 minutes or until veggies are tender with crisp edges.
Sprinkle chopped fresh parsley and serve hot or warm!