Preheat oven to 450 degrees F.
Slice the potatoes into thin “quarter” pieces by cutting the potatoes in half lengthwise and then cutting into thin slices (see photos) about ¼” thick.
Transfer cut potatoes into a large bowl.
Pour olive oil over potatoes and stir to coat.
Sprinkle sea salt, garlic powder, and black pepper over the potatoes and stir until evenly distributed.
Grease a large baking sheet and spread the potatoes in an even layer on the baking sheet.
Roast in the preheated oven for 20 minutes, stir, and continue roasting until the potatoes are lightly brown.
Remove from oven and serve immediately.
