1-Parboil the wedges: Bring a large pot of salted water to a rolling boil, add a splash of vinegar or lemon juice, boil wedges for exactly 10 minutes, then drain and cool dry on a towel.

2-Prepare the marinade: Whisk together olive oil, lemon juice and zest, garlic powder, onion powder, rosemary, salt, and pepper.

3-Coat the potatoes: Toss the cooled potatoes gently in the marinade until well coated, then let them sit while you heat the grill.

4-Heat the grill: Preheat grill to medium-high (400°F); if using wooden skewers, soak them in water for at least 30 minutes.

5-Grill to golden perfection: Place potatoes in a single layer in a grill basket or on oiled grates, grill for about 20 minutes, flipping every 5 minutes until fork-tender and charred.

6-Finish with fresh parsley: Transfer hot grilled potatoes to a bowl and toss with reserved chopped parsley.