YOU SAID:
I wonder what I am having for breakfast
INTO JAPANESE
私は朝食のために持っていますのだろうか
BACK INTO ENGLISH
I wonder what you have for breakfast
INTO JAPANESE
私は朝食のためにあなたが持っているのだろうか
BACK INTO ENGLISH
I wonder what you have for breakfast
That didn't even make that much sense in English.