Should we know if our meat is Halal?

I purchased from Tesco chicken balls in batter to try and copy the sweet and sour the kids buy from the Chinese.
They were lovely worked well for them as a fake away.
I decided to see where the chicken came from, it was China, I looked for the approval of Red star the equivalent of the label given to cruelty free sourcing here, it didn't have it.
Then I saw it was halal which I choose not to eat.
It has upset me as an animal lover.
I know many will say does it matter but for me it does and I would have liked the company to put that it was halal on the packet to be seen am I being unreasonable?