Preheat your oven to 425°F.
Begin by peeling and cutting the sweet potato into cubes. Toss them lightly with a pinch of salt and a drizzle of olive oil, then spread evenly on a baking sheet.
Place the sweet potato in the oven and roast for about 20 minutes until slightly tender.
While the sweet potato begins roasting, season the chicken breast with salt, pepper, and the chopped fresh herbs to form a crust.
Heat a non-stick pan over medium-high heat and add the olive oil. Once the oil shimmers, add the seasoned chicken breast.
Pan-sear the chicken for about 4-5 minutes on each side until a golden crust forms and the internal temperature reaches 165°F.
In a bowl, toss the diced zucchini, red bell pepper, and sliced red onion with a small drizzle of olive oil, salt, pepper, and a sprinkle of herbs.
After the sweet potato has roasted for 20 minutes, add the bowl of mixed vegetables to the baking sheet and roast for an additional 10-15 minutes until all vegetables are tender.
Plate the pan-seared chicken alongside the roasted sweet potato and vegetables, then garnish with additional fresh herbs if desired.