Preheat your oven to 400°F and line a large baking sheet with parchment paper.
Cut the potato into eight even wedges and pat them thoroughly dry with a paper towel to ensure maximum crispiness.
In a mixing bowl, toss the potato wedges with olive oil, garlic powder, onion powder, sea salt, and black pepper until evenly coated.
Spread the potatoes on the baking sheet in a single layer and roast for 20 minutes.
While potatoes roast, season the chicken breast with a pinch of salt and pepper.
Flip the potatoes, sprinkle them with the parmesan cheese, and place the chicken breast on the other side of the baking sheet.
Roast for an additional 15 to 20 minutes until the chicken reaches an internal temperature of 165°F and the potatoes are golden brown.
Slice the chicken and serve alongside the wedges, garnished with freshly chopped parsley.