Trim the ends of the plantains, then make a shallow slit along the length of each plantain skin, taking care to not cut into the flesh. Peel off the skin and discard.
Slice the plantains into very thin rounds or planks using a sharp knife or a mandoline slicer.
In a large, heavy-bottomed skillet or deep fryer, pour in enough vegetable oil to submerge the plantain slices. The oil should be about 2 inches deep in a skillet (fill to marked line in a deep fryer).
Heat the oil over medium-high heat until it reaches 350°F (175°C). You can test the oil by dropping in a small piece of plantain; it should sizzle immediately.
Slide in a handful of plantain slices to the hot oil. Avoid overcrowding the pan to ensure they cook evenly.
Fry for 2-3 minutes on each side, or until crisp and golden. Use tongs or a skimmer to remove and place on a paper towel-lined plate to drain excess oil. Repeat with remaining plantain until all slices are fried.
While the chips are still hot, sprinkle with salt to taste. Toss gently to coat, then serve or cool completely to store.
Nutrition information is an estimate based on online calculators and provided as a courtesy. Any nutritional information should be used as a general guideline only.