Peel the green plantains by cutting off the ends and making a lengthwise slit in the skin. Remove the skin and slice the plantains into 1/2-inch thick rounds.
Heat about 1/2 inch of vegetable oil in a large skillet over medium heat.
Add the plantain slices to the hot oil in batches, frying until they are golden brown and slightly crispy, about 2-3 minutes per side. Remove with a slotted spoon and drain on paper towels.
Place a plantain slice between two pieces of parchment paper or plastic wrap. Use a flat object, like a skillet or a meat mallet, to gently flatten the plantain slice to about 1/4 inch thickness.
Return the flattened plantains to the hot oil and fry again until crispy and golden brown, about 1-2 minutes per side.
Remove the plantains from the oil and drain on paper towels. Season with salt while still hot.
Enjoy your meal!