Question:
Can bread be taken from the freezer and then eaten as a bread meal without heating? Or is this considered disrespectful if the bread is not fresh and then not heated up?
Answer:
Your sense of respect for brachos is remarkable.
Whenever we say a bracha on food it is prefferable that the food be as tasty and prominent as possible. This is why we will make the bracha on a whole item, or on the one that we like best. Therefore it is prefferable to make he bracha when the bread is defrosted already. However according to a number of poskim, even if the bread is still frozen we will still make a bracha on it. This is because frozen bread although not as pleasent, is still edible (although it would be better to wait a little for it to partially defrost so you will surely benifit from it). It is for this reason that a frozen Challah may be used for lechem mishne on Shabbos.
Best wishes
Sources:
Minchas Yitzchok 9-42, Rivivos Efrayim 2-115 (2), Meohr Hashabbos 1-c chap 27-2 quoting Dayan Fisher zt”l that frozen challah is edible, Kovetz Halachos ( Shabbos) 1-14 (19),