The phrase 'such a chore' is grammatically correct and can be used in written English.
It is often used to describe something that is difficult, tedious, or unpleasant to do. Example: "Washing dishes is such a chore, especially after a big dinner party."
New Year's Eve is such a chore, isn't it?
The morning trek becomes shorter; lugging home groceries isn't such a chore.
But I had to help do her homework – such a chore.
It would have been such a chore thinking in those terms.
There's no getting around the fact that you need nearly an hour to make real polenta, but it's not such a chore.
The views are great, and the restaurant serves the sort of roasts and pies that make squeezing into body-con dresses such a chore.
Suggest (in a nice tone) that they apply for employment or come up with a system for them to get an allowance (such a chores or babysitting).
Although it may not seem like it matters, saying caring things to her or doing something that she usually hates doing (such as a chore) will register in her mind making her think that you are very sweet.
I WILL not bother today to list all of the petty annoyances that make air travel such a woeful chore these days.
Only minor infractions came his way, but even such a routine chore as driving the drunk wagon down to Sin City could make him conscious of the sense of justice in himself that had been so tumultuously aroused the preceding November.
While some might take on such a thankless chore in exchange for, say, the largest or most luxurious bedroom, or perhaps a reduction in rent or a free ride, such advantages don't seem to be what motivates Mr. Baird (though he does get his own room).
