Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Wash and dice the Yukon Gold potato into 1/2-inch cubes, and slice the zucchini into half-moons.
Place the potato cubes on the baking sheet, drizzle with half of the olive oil, and season with a pinch of sea salt and black pepper. Roast for 15 minutes.
While the potatoes are roasting, rub the chicken breast with the remaining olive oil and season both sides with dried oregano, garlic powder, sea salt, and black pepper.
Remove the baking sheet from the oven, move the potatoes to one side, and add the chicken breast and zucchini slices to the empty space.
Return the pan to the oven and roast for an additional 15-20 minutes, or until the chicken reaches an internal temperature of 165°F and the potatoes are golden-brown.
While the meal finishes roasting, place the cottage cheese into a small blender or food processor and blend until completely smooth and creamy.
Slice the chicken breast and serve it alongside the roasted vegetables, topped with a dollop of the whipped cottage cheese and a sprinkle of fresh parsley.