Two books/series with very little in common. Except, I suppose, I found them both kind of dissatisfying - Mercedes Lackey's Collegium Chronicles and Orrie Hitt's Unfaithful Wives.
The Collegium Chronicles (2008 - 2013) are five of the (counts rapidly) bajillion Valdemar novels by Mercedes Lackey. This particular sequence follows the young Mags as he's rescued from working as a mine slave and makes the startling transition to student at a magical university. His efforts to fit in, make friends, and adapt to his comfy new existence are occasionally interrupted by assassins.
If I sat down at wrote a list of 'stuff that bugged me in fantasy novels', the Collegium Chronicles would tick a dozen different items - from annoying dialects to poverty porn to magical horses to meandering descriptions of meaningless trivia (seriously, one of the books features a page-long list of pie fillings) to frequent, implausible deus ex machina to heavy-handed infodumping. Hell, there's even a shameless Quidditch knockoff.
And, good lord, the Chosen One-ness. Mags is lifted from obscurity because he's born magical and special - if he weren't, his plight (like those of his dozens of peers in the mines) would have gone completely unnoticed. As he grows, we learn that he's amazingly special in so many, many unique ways. Even at a magical university packed with magical snowflakes, he's the snowflakiest of all: the best at everything he does, possessed of a uniquely powerful magical talent, and, of course, descended from a mysterious bloodline.