For $3/slice, it's not bad. Given the price and the location (in Boulder Station casino), you might want to scale back your expectations, but it's pretty solid for grabbing something unhealthy if you're already here. Cheese tastes real, choice of toppings available.
Prepare yourself, though- the pizza is kept heated by lamps, and they don't toss it in an oven to heat up before serving as at other places. They simply plate it from the display. At least prices are good though- if a slice isn't enough carbs for you, add on garlic knots, 3/$1.