Me personally. Ok Idk how anyone will react to this but I also don't care, it's relevant.
If someone touches my food either by taking it behind my back, asking me for some and taking too much, or sticking their hand in without permission, I have literally gotten into fights about this. Idk what it is but it is the biggest disrespect to me! I was just thinking about a mate of mine who this happened to me with recently who dug his hand in my food and helped himself to it....
you need to stand up for yourself OP.