Preheat the oven to 400 degrees. Coat a baking sheet with olive oil cooking spray.
Roast the vegetables by placing the chopped onion, mushroom, and pepper on the baking sheet. Drizzle the veggies with 1 tablespoon of olive oil.
Place into the oven and roast for 20 minutes.
Remove from the oven and add the zucchini, asparagus, and grape tomatoes to the baking sheet.
Drizzle the remaining tablespoon of olive oil on top, then toss to coat evenly. Return to the oven to roast for 15 minutes.
Remove from the oven and season with sea salt and freshly cracked pepper, to taste. Set aside.
Cook the chicken by heating the olive oil in a large skillet over medium-high heat.
Cut the chicken into bite-sized chunks and season with sea salt, freshly cracked pepper, garlic powder, and a pinch of crushed red pepper flakes, to taste.
Place the chicken pieces into the HOT skillet and cook, stirring occasionally, until golden brown and cooked through, about 5-7 minutes.
To serve, spoon some rice into a bowl, then top with some chicken and roasted veggies. Sprinkle the top with chopped parsley and shredded Parmesan. Serve immediately. Enjoy.