It’s not weird. In this job market anything that makes an applicant stand out in a positive way is good. Going to the length of finding out interviewers’ names and sending a thank you note might be just that.
But watch out with the hand written notes, I just hired a 22-year old right out of undergrad. He’s great, but his handwriting looks like old Nordic runes 
My own kids never learned cursive in school and their handwriting is equally cryptic, so I advise them to send thank you emails.