Preheat your oven to 400°F.
In a small bowl, combine dried thyme, dried rosemary, garlic powder, salt, and pepper.
Pat the chicken breast dry and rub the herb mixture evenly over the surface.
Heat a non-stick skillet over medium-high heat and add the olive oil.
Sear the chicken breast for 2-3 minutes on each side until a golden crust forms.
While the chicken is searing, chop the zucchini, red bell pepper, and broccoli into bite-sized pieces.
Toss the vegetables lightly with a pinch of salt, pepper, and a drizzle of olive oil if desired.
Transfer the vegetables to a baking sheet and roast in the preheated oven for about 15-20 minutes, until tender and slightly charred.
Once the chicken is seared, lower the heat if necessary and cover the pan with a lid to allow the chicken to cook through for an additional 5-7 minutes, or until the internal temperature reaches 165°F.
Plate the chicken alongside the roasted vegetables and serve immediately.