Housemate never leaves the kitchen

I'm living in a shared house with 5 other people. There's this person who would literally cook then eat then sit in the kitchen for hours and hours, and it makes me slightly uncomfortable.

They're clean and tidy however super quiet, sometimes if I say hi they would sit there and not say hi back, and it makes things a little awkward when I'm cooking cuz I feel like they're just sitting there watching me. I don't know if I'm being weird about it but the fact that the house is already super quiet and I have somebody sitting there the whole time when I'm cooking being non verbal really makes it worse. Just a rant 😭