I like Brompton's folding pedal, it does not have to come off. , their bikes only need a left , but they make a right hand* one too.
the company even mailed a new one when I showed pictures of stress cracks on the one that was on a used bike, I bought..
The pedal Core slips onto the big pedal bearing, that screws into the crank arm .. now they don't need a 24mm socket , (used to)
just an hex allen wrench, to screw/unscrew them.
....