あたりはずれ
matter of hit-and-miss; mix of success and failure; variation (in quality, returns, etc.)
Also written 当たりはずれ、当り外れ、あたり外れ、当りはずれ
Noun
「お好このみ焼やき」って美味おいしいけど、お店みせによって「当あたり外はずれ」があるよね?
Okonomiyaki itself is delicious, but it's a hit-or-miss depending on the restaurant that makes it.