I can only comment on the grilled chicken because that's all I've ever ordered. It's kind of on the dry side but quite flavourful and cooked throughout. The piri piri sauce is more of an oil so if you're not a fan of that, I'd ask for it on the side.
I am interested in trying their grilled calamari and bacalhau but I don't think I've ever seen it on display - maybe they weren't serving it the days I was there.
Just a heads-up that parking is a bit of a challenge because most of the stores in the plaza have spots reserved and you can't actually park on The Queensway. Depending on the time of day, you could park on Brawley (the side street) and just quickly run in and out.