My mom used to make this and it was delicious!

Preheat the oven to 425°F (220°C).

Prepare the Potato Crescendo:

In a large bowl, toss together the sliced russet potatoes (4 large), olive oil (1/4 cup), garlic powder (1 teaspoon), paprika (1 teaspoon), and salt and pepper (to taste). Make sure all the potato slices are well coated with the seasoning.
Marinate the Onion Overture:

In a separate bowl, whisk together the balsamic vinegar (2 tablespoons), honey (1 tablespoon), olive oil (2 tablespoons), salt and pepper (to taste).
Add the thinly sliced onions (2 large) to the marinade and toss to coat them evenly.
Assemble and Bake:

Spread the seasoned potato slices in a single layer on a baking sheet.
Generously sprinkle the marinated onions over the potatoes.
Place the baking sheet in the preheated oven and bake for 30-35 minutes, or until the potatoes are golden brown and crispy.