rennet

Q: Recently, I found out that it is likely that most cheeses in fritolay snacks contain rennet from animals slaughtered in a haram manner. Does that make the cheese haram too? I'm confused about this because I used to get those snacks in the masjid when I was younger.

Q: Could you please send me the details of the shar'ee ruling on cheese, as most of them contain animal rennet.