Yes, I've tried a version of that which was preheating a marble chopping board in the oven on full heat, slapping the naan on it and then back in the over. Oven just doesn't get hot enough to cook quickly enough. My preferred method is to heat a non-stick frying pan on hob at full heat till it is scorching hot. Slap naan on the pan, then go over the top of the naan with a blow torch. That's the best I can manage.