Preheat your oven to 425°F to roast the vegetables.
Cut the bell pepper, zucchini, and red onion into bite-sized pieces and toss with olive oil, garlic powder, dried rosemary, dried thyme, salt, and pepper.
Spread the vegetables on a baking sheet and roast in the oven for about 20-25 minutes until tender and slightly caramelized.
While the vegetables are roasting, pat the chicken breast dry and season with a pinch of salt, pepper, garlic powder, rosemary, and thyme.
Heat a non-stick skillet over medium-high heat and add a drizzle of olive oil.
Sear the chicken breast for 3-4 minutes on each side until a golden, herb-crusted exterior forms and the internal temperature reaches 165°F.
Let the chicken rest for a few minutes before slicing.
Plate the sliced chicken breast alongside the roasted vegetables and serve immediately.