The worst restaurant in Rancho Cucamonga?

We probably haven't been there, but for the record our number one contender is Zendejas Mexican food on Vineyard and Foothill.  My breakfast buffet was at best mediocre (albeit the conchas were tasty) and the service indifferent.  

Rocio had huevos rancheros which used the wrong salsa for the dish.  

It's no surprise that Zendejas was essentially empty all three times we looked at the place.  

1.5 tarts.