I don't think lexan lends itself to hot bends, however I have made
several three panel winshields in a sheet metal brake. I bends
beautifully, however don't ever spill gasoline on it, especially if it
is stressed or it will craze and shatter almost immediately.
I have had two aircraft with Lexan windshields - an Ercoupe and an Emeraude. Both of the windshields were gently curved and installed cold. Both of them were unsatisfactory as they developed internal crazing which rendered them unusable when flying into the sun.
I would not use Lexan for this application again.