Preheat your oven to 425°F (220°C).
Place the baby potatoes in a pot of salted water and boil until tender, about 10-15 minutes. Drain and let cool slightly.
While the potatoes are boiling, season the chicken breast with garlic powder, dried rosemary, dried thyme, salt, and pepper.
Place the seasoned chicken breast on a baking sheet lined with parchment paper.
Lightly drizzle the olive oil over the chicken and place in the oven. Roast for 20-25 minutes until the chicken is cooked through and golden.
Once the potatoes are cool enough to handle, gently press them with the bottom of a glass or fork to smash them into slightly flattened rounds.
Place the smashed potatoes on another baking sheet, season with salt and pepper, and roast in the oven for about 15 minutes until crispy on the edges.
Toss the broccoli and carrots with a little salt, pepper, and any remaining olive oil leftover from the chicken drizzles, and spread them on a baking sheet. Roast for about 10-12 minutes until tender and slightly caramelized.
Plate the dish by serving the herb-roasted chicken alongside the crispy smashed potatoes and a generous portion of roasted vegetables. Enjoy immediately.