I'm not a Muslim but I only eat halal food (story for another time).
There's a halal butcher/shop near me I've started using and last time I went in I wanted pizza. The only one they did was a Goodfella's Pepperoni. I know some pepperoni products are halal due to the meat being made from turkey, but I wouldn't have thought a widespread brand like Goodfella's would do this. The staff member assured me it was halal despite not displaying the symbol. In the end I removed the pepperoni before cooking as I didn't entirely trust them.
Anyone know if these products are actually halal, and if not why would a specialised halal shop be selling it?