Step 1: Preheat your oven to 425°F (220°C). Line a large baking sheet with parchment paper for easy cleanup. If you’re using Parmesan cheese, have it ready.
Step 2: Thoroughly wash the russet potatoes. Using a sharp knife or a mandoline, slice them into thin rounds, approximately 1/4 inch thick. Aim for even slices for uniform cooking.
Step 3: In a large mixing bowl, combine the olive oil, garlic powder, paprika, salt, and black pepper. Add the sliced potatoes to the bowl and toss them gently until each slice is evenly coated with the oil and spice mixture.
Step 4: Arrange the seasoned potato slices in a single layer on the prepared baking sheet. Ensure there is no overlapping; this is crucial for achieving maximum crispiness. Use a second baking sheet if needed.
Step 5: Bake for 25-30 minutes, flipping the potato slices halfway through the cooking time, until they are golden brown and deliciously crispy. If using Parmesan cheese, sprinkle it over the potatoes during the last 5 minutes of baking.
Step 6: Once baked to perfection, remove the potatoes from the oven. Let them cool slightly before serving. Garnish with fresh chopped herbs like rosemary or thyme, if desired, for an extra touch of flavor and presentation. Serve warm and enjoy!