Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Chop the bell pepper and zucchini into uniform, bite-sized pieces.
In a small shallow bowl, whisk together the almond flour, nutritional yeast, dried oregano, garlic powder, sea salt, and black pepper.
Pat the chicken breast completely dry with a paper towel and lightly brush it with a small portion of the olive oil.
Press the chicken firmly into the almond flour mixture until both sides are evenly coated with the herb crust.
Place the crusted chicken on one side of the prepared baking sheet.
On the other side of the sheet, toss the broccoli florets, chopped bell pepper, and zucchini with the remaining olive oil.
Spread the vegetables out in a single layer to ensure they roast evenly.
Bake for 20 to 25 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender with slightly charred edges.
Let the chicken rest for 5 minutes before slicing and serving alongside the roasted vegetables.