The first thing that stood out to me was the almost exact same family makeup, with the out-of-it Dad, two teen kids and alien taking the place of Brian (the goldfish, so far, seems useless IMO and I think the show could do without it).
The situation with school also reminded me of Peter getting involved with Meg and Chris's school in his own wacky ways.
You could try to chalk it up to "a series of mere coincidences", but considering the source, it's hard to discount them at the same time.
EDIT: Maniac also made some good points