WTF Chipotle

So, I had a chicken salad bowl with only lettuce, chicken, fajita veggies, cheese, little sour cream, and guacamole. That was 2 days ago and I am UP 5 lbs since. That is the only different food I have done. No idea what is going on. I was down 20lbs prior over the last 2 1/2 months. Chipotle hiding something in the food? Funny thing is that my wife said she has not felt well since eating there.