Preheat oven to 400°F (205°C).
Season potatoes
Toss potatoes (and onion if using) with half the olive oil, salt, pepper, garlic powder, and paprika.
Season pork chops
Rub pork chops with remaining olive oil, salt, pepper, and herbs.
Bake
Spread potatoes on a baking sheet or pan.
Place pork chops on top or beside them.
Bake uncovered for 35–40 minutes, flipping pork chops halfway, until:
Potatoes are tender
Pork reaches 145°F (63°C) inside
Rest & serve
Let pork chops rest 5 minutes before serving.
Optional upgrades
Add green beans or carrots to the pan
Finish pork chops with a butter + garlic spooned on top
Sprinkle fresh parsley before serving
If you want, I can also give you:
A skillet version
A slow-cooker method
A kid-friendly seasoning option