Huh?! Doesn't this literally describe the Warden from DA:O? In fact, the special, I mean Warden, gets chosen twice: first by Duncan, and again by Flemeth. What am I missing here?
For Duncan, it was supposed to be a Grey Warden effort that 'The Warden' was only going to be a smaller part of.
For Flemeth, this is more true. She specifically chooses The Warden. However, we have no idea what this is for. She sets us off, but with inconsistent words to explain herself. Sometimes its to stop the Blight. Sometimes its just to buzz off and leave her be. Sometimes its to assist Morrigan with 'plans'.
Clearer Chosen One examples involve something like a prophecy, divine intervention, the whole world actively depending on the specific person (typically protagonist) to be victorious/successful. Like I wouldn't say Shepard is as much one in ME1 (even though he was 'chosen' by the Alliance/Council), but Shepard in ME3, by the very end, becomes THE Chosen One.
Hawke definitely wasn't a Chosen One. He was a relative nobody that kept attracting attention and events. If anything, he was chosen by Flemeth to sow chaos, but that's not one of the clearer Chosen One cases.
Getting just 'chosen' by others doesn't make a very strong case to be 'The Chosen One'. Better examples are Neo, Luke Skywalker, people like that (typically male, which kinda annoys me). People who appear chosen by the universe itself to play out their story. The Warden and Hawke didn't really go that far, but once you get a protagonist that is said to have the direct blessing and appointing by The Maker himself, well...
I'd say that Bioware writes most of their protagonists as if they are all the Chosen One (part of a good power fantasy), but it isn't really something that they rely on when it comes down to it. All of their previous protagonists could still be understood to just be 'anyone'. Any other soldier could have been Shepard, at first. Any other mage/rogue/warrior could have been the Warden. Any other human could have been Hawke. It was their specific placement and how they reacted to things as a character that made them not 'Chosen' (at least at first), but independent. Chosen Ones typically in a story have little to no freedom in them being set on their destiny or not*.
*I'd still say that Shepard becomes more and more Chosen as the trilogy continues, but ME1 Shepard is definitely NOT a good example of a Chosen One (the beacon certainly wasn't intended for him specifically). And while Flemeth sets Warden/Hawke on their paths, in the story these protagonists are quite free to go off somewhere else. I don't think the Inquisitor will have that freedom, but will be instantly thrust into greatness by other entities.
Maybe pre-Breach Inquisitor wasn't a Chosen One, but as far as the game's narrative will probably go, post-Breach Inquisitor will be the biggest Chosen One of maybe any previous Bioware game (though I don't have much experience with BG/NWN).