A couple ways actually! If I'm pan frying small batches, I do the lay out by slice thing, BUT I separate the slices before hand and let the pan heat up first. That way I can add them in at the same time/temperature so there isn't any variance in he cooking times. Also I watch and flip when necessary.
The second way is if I want to cook up a big batch of it all at once. Get a decent sized cookie sheet, line it with parchment paper or foil, spread all the slices out, and pop it the oven at 400 f for about 15 to 20 minutes!