I'm not experienced enough to give advice but it does sound like he's just a little nervous. He's still a new snake to you and has had a lot of big changes plus he just ate so it makes sense that he'd be edgy but the fact he hasn't actually bit you and is just acting antsy is a good sign. Just keep his area kept up and let him adjust and i'd imagine he'll be right as rain in a week or so. Side note: is that the snake in question as your avatar photo?