YOU SAID:
i had lunch for breakfast
INTO JAPANESE
私は朝食に昼食をとりました
BACK INTO ENGLISH
I had lunch for breakfast
INTO JAPANESE
朝食にランチを食べました
BACK INTO ENGLISH
I ate lunch for breakfast
INTO JAPANESE
朝食にランチを食べました
BACK INTO ENGLISH
I ate lunch for breakfast
That didn't even make that much sense in English.