Preheat oven to 450 degrees.
In a medium sized bowl, squeeze the juice from the lemon over potatoes.
Lightly coat with olive oil, then add the oregano and toss.
Transfer to a 9 x 13 pan or baking sheet and lay potatoes flat.
Sprinkle salt over potatoes and place in oven for 30 minutes, stirring halfway through to allow browning on both sides.
Potatoes are done when they can be easily pierced with a fork.