In fact, this word is capricciosa in Italian, which should be written with the katakana "カプリチョーザ", but it is abbreviated as きまぐれ in inexplicable Japanese.
Capriciosa, transliterated as Capriiosa in China, refers to a flavor of southern Italy, which is generally mixed with ham, vegetable salad and mayonnaise, and is commonly found in pizza and noodles.