Blessing on Fried Bread

I have pieces of challah less than a kezayit, and I want to fry them. Should I recite 'Hamotzi Lechem Min Haaretz' and 'Birkat Hamazon' over them?

If fried in a little oil, certainly recite 'Hamotzi' and 'Birkat Hamazon'. If fried in deep oil, there is doubt about the blessing, so either eat it within a bread meal or leave one piece larger than a kezayit and recite 'Hamotzi' and 'Birkat Hamazon' on it.

In Siman 168, paragraph 10, it is explained that pieces less than a kezayit that are cooked are blessed with 'Borei Minei Mezonot'. In Mishnah Berurah, s.k. 56, it is brought in the name of the Magen Avraham that there is doubt whether frying is considered cooking. (And although in paragraph 13, the Shulchan Aruch explicitly states that frying is like cooking, there it refers to frying dough, which is considered cooking, but the doubt of the Mishnah Berurah is when it was bread, and through cooking, it loses the importance of bread, and here there is doubt whether frying, which rather hardens the bread, is similar to cooking). In Shaar HaTziyun, s.k. 52, this remains a question in practical halacha. And what is written that with one piece larger than a kezayit, one can again eat all the pieces without blessing 'Mezonot', this is explained in Mishnah Berurah, s.k. 53, even regarding cooking. In Biur Halacha, d.h. 'And if not', it is explained that one must eat the piece, and it is not enough that there is one piece in the pot larger than a kezayit.