Is it safe to eat Chicken Caesar Salad?

Hi. I'm 10 weeks and today for lunch I had a small Chicken Caesar Salad. I remember eating them when I was pregnant with my first. But now I'm freaking out because I'm reading that they aren't safe. Why aren't they safe and what can happen to my baby? I rarely eat them and I'm usually pretty good with not eating the other things unsafe during pregnancy. Can someone please calm my worries? Thank you!