I'm inclined to give this 2 stars but it is 'a-ok.'
After a hyped lead-in at an Edmonton branch near Oliver Square, we were quite seriously let down by sauces that didn't distinguish the bland chicken fare all that much above ordinary deep-fried or grilled bird. As well, the sides were unremarkable.
Although it's supposed to be authentically Portuguese, on the second visit, it hadn't improved at this 17th Ave. SW outlet in Calgary, and pretty well deters us from ever returning. Only 3-5 blocks away - depending on what side of 17th you are travelling down - is a much better bet at Simply Irie jerk chicken with flavours that are somewhat remarkable.
Ah, skip this Nandos. For the average foodie, it's just not there.