Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Cut the chicken breast into 1-inch cubes and chop the zucchini, bell pepper, and red onion into uniform bite-sized pieces.
In a large mixing bowl, whisk together the olive oil, dried oregano, garlic powder, sea salt, and black pepper.
Add the chicken, chickpeas, and all the chopped vegetables to the bowl, tossing thoroughly until everything is evenly coated in the herb oil.
Spread the mixture in a single layer across the prepared baking sheet, making sure not to overcrowd the pan so the vegetables roast and caramelize properly.
Bake for 20 to 25 minutes, or until the chicken is cooked through and the vegetables are tender with slightly charred edges.
Remove from the oven, immediately drizzle with fresh lemon juice, and sprinkle with parmesan cheese before serving.