Eating anxiety

Okay so many of you are going to think I’m crazy, but if any of you have social anxiety, you may understand where im coming from. Im a nanny and I always bring my own lunch to work to eat while the kids sleep. Tomorrow, the dad is off of work and is going to be around the house. I already feel awkward enough, but usually I don’t eat or bring a lunch when he’s home because I feel uncomfortable eating around people I’m not used to. I don’t want to starve myself but I really feel anxious about eating around him. Please can anyone help ease my mind of give suggestions on what to do