If I understand your question correctly, you are asking: If you can deliver foods (that are not halal) ordered through the website. If this is correct, the answer is: You are allowed to carry them as long as they are not alcohol, and you are delivering them to non-Muslims.

 

If your conscience bothers you, you should try to find another job as soon as possible. You can continue it as long as you cleanse your income of the taints of haram in your earnings through optional charities and lots of Istighfaar. Allah says, “Surely good deeds blot out the bad.”

 

Almighty Allah knows best.