This is a franchise similar to Qdoba, Chipotle, etc. The thing which they use to differentiate themselves is that they make their tortillas from dough when you order and also "bob" it...which apparently means mixing the filling of the burrito when you order.
The good: Each item is a set price. If you order a burrito it is the same price no matter what filling you choose.
The bad: Flavor is not nearly as good as Qdoba or chipotle. I ordered a burrito with guac and carnitas. In particular, I had an issue with the rice. It basically tasted like butter & rice (a bit too oily too) and it overwhelmed everything. The meat was not as flavorful as Qdoba/Chipotle as well.
Overall, I would pick Qdoba/Chipotle over Panchero's any day even though it costs about $2 more for the burrito I usually order there.