Preheat oven to 425°F and line a large sheet pan with aluminum foil or parchment paper.
Pat pork chops dry with paper towels and rub with 1 tablespoon olive oil. Season generously on both sides with 2 tablespoons ranch seasoning.
In a large bowl, toss quartered potatoes with 1 tablespoon olive oil, garlic powder, paprika, and remaining ranch seasoning.
Spread potatoes on one half of the sheet pan. Place pork chops on the other half.
Bake for 15 minutes.
Remove from oven and add green beans to the pan with potatoes. Drizzle with remaining olive oil and sprinkle with black pepper. Toss to coat.
Return to oven and bake for another 8-10 minutes, until pork chops reach an internal temperature of 145°F and vegetables are tender.
Let pork chops rest for 5 minutes, then garnish with fresh parsley and serve hot.