Combine vegetable oil and seasoning in a plastic bag or mixing bowl. Place potato cubes in the bag and close or in a bowl; shake/stir to coat them with oil and seasoning. Pour the contents of the bag/bowl onto a baking sheet, making sure they are in only one layer. Bake in the oven at 425°F for 40-45 minutes, stirring occasionally. Remove from the oven when the potatoes are tender and lightly browned.