I've done Jupiter's twice now, and both times were average.
This most recent trip was a weekday lunch. We were one of three tables filled in the place, and it was straight up noon (not a good sign to me). The restaurant is very open, with pool tables, a large bar and a fair amount of TVs. Our waitress was attentive and gave good recommendations.
I went with one - the Enchilada Pizza with steak (other option was chicken, which I would have chosen but our waitress said the steak was the way to go). I liked the pizza - thin crust, about 10" - especially the load of chopped veggies and refried bean puree decoration on top.