Slice the potato into very thin (about 1/16-inch thick) rounds.
Place them in a large resealable plastic bag and drizzle the oil over them.
Seal the bag and toss to evenly coat the potatoes.
Season them with salt and toss again.
Cover a large microwave-safe dinner plate with parchment paper. Lightly mist the paper with spray.
Working in batches if necessary, place the potato slices on the parchment in a single layer.
Microwave the potatoes on high for 5 to 7 minutes, or until the chips are completely crisp (be careful not to burn them). Allow them to cool for about 2 minutes. Serve immediately.