It looks good to me too! Maybe your new carpet is just fun to chew, or maybe he's a little bored because he doesn't have as much interaction with the rest of the house.
If you think he might be bored, you could try adding in more things to play with - my rabbit is completely disinterested in...
You mentioned that you have a dog, so as someone with co-existing rabbit and dog, I just wanted to give some unsolicited safety advice: if you're free roaming in any space that other people have access to and you don't have an airlock setup, keep in mind that your rabbit's safety is determined...