Umm ok is there something wrong with my face? Everyone was kinda mean to me just now.

I'm in a city I'm not familiar with passing through and decided to grab McDonald's for lunch. Nobody greeted me at the speaker so I sat there and waited. This lady snapped at me and then when I go pay at the first window some guy is glaring at me without saying a word the whole time. I go to the second window to get my food and another guy is wordless just glaring at me. Did i do something wrong?