Perfect Pan Fried Potatoes

Slice potatoes into coins about ¼” thick. In a large skillet over medium-high heat, heat oils. Add potatoes and season with rosemary, salt and pepper. Cook, undisturbed, until potatoes are golden and crusty underneath, 4 to 5 minutes. Flip potatoes and cook until golden on other sides, 4 to 5 minutes more. Sprinkle with garlic powder and chili powder, and continue to cook, stirring occasionally, until potatoes are tender, about 2 minutes more. Serve warm.