I'm scared of restaurants messing with my food
Why do you think they'll mess with your food?
I don't know I guess I just hate not having control over my food.
Restaurants are in the business of having repeat costumers. They don't want to do anything to your food. This is all based on your own irrational fears.
I will still be paranoid and think they are out to get me.
It's important that we don't like irrational fears get the better of us. However, if you really feel like you can't get over this, perhaps you should just eat at home for now on?