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 bite-sized pieces and slice the zucchini and yellow squash into half-moons.
In a large mixing bowl, combine the chicken, zucchini, and squash with the olive oil, sea salt, black pepper, garlic powder, and dried oregano.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces are not overcrowded so they roast properly.
Bake for 18 to 20 minutes, or until the chicken is cooked through and the vegetables are tender and slightly caramelized.
While the chicken roasts, warm your pre-cooked jasmine rice in a small saucepan or microwave until steaming.
Divide the warm rice into bowls and top with the roasted chicken and vegetable mixture.
Garnish with freshly chopped parsley before serving for a bright and herbaceous finish.