Peel potatoes and cut into large steak-size fries.

Heat oil in a deep fryer or saucepan with high sides. Heat to 375 degrees or medium high.

Using a spatula carefully place 1/2 of cut sweet potatoes into hot oil. Turn heat back to medium heat. Fry potatoes until tender and light brown. Lift out and drain on paper towels. Fry remaining 1/2 potatoes.

Mix salt, paprika, chili powder and onion powder in a small bowl. Using fingers sprinkle seasonings onto hot potatoes. Serve immediately.