Is this man being creepy and should I watch out for him?

Anonymous
There’s a delivery driver that comes into my job at night when I’m working. He’s came in a couple of times now. I’m by myself and the last time he came in he asked me was everything ok with me because I seemed fidgety ( I don’t think I was ) but I told him yes and he eventually left after dropping off a package. Then today he came in and was like “you have a gun in here?” And I told him I didn’t and asked why and he said “because you seem so fidgety and timid everytime I come in” then he had me sign my name for a package and my name is Cora and he was like “Cora” and he said it in kind of a funny way then said have a good night and left. Am I overthinking or should I watch this guy?
Is this man being creepy and should I watch out for him?
4 Opinion