Muslims have the opposite view of who is the spiritual inheritor of Avraham Avinu, so they contradict Hashem, so their concept of Hashem is totally different, plus there is the “strange” ritual they perform one a year on their pilgrimage which intensifies the idea that they believe in a “different” identity, even if appearing to be monotheistic, not the same as Hashem.
There is no need to label kosher food as halal, they know it is the best.
I do not think it is advisable to label kosher food as hallal, as it is misleading to Jews, who may be led astray has v sholom.