Preheat your oven to 425°F and line a large baking sheet with parchment paper.
Wash and slice potatoes into 1/2-inch thick rounds, leaving skin on.
Pat potato rounds dry with paper towels and place in a large bowl.
Drizzle with olive oil and toss to coat evenly.
In a small bowl, combine garlic powder, onion powder, paprika, rosemary, salt, and pepper.
Sprinkle seasoning mixture over potatoes and toss until well coated.
Arrange potato rounds in a single layer on the prepared baking sheet, ensuring they don't overlap.
Bake for 25 minutes, then flip each round carefully with a spatula.
Continue baking for 20-25 minutes until edges are golden and crispy, and centers are tender when pierced with a fork.
Remove from oven and garnish with fresh chives before serving.