Glossary entry (derived from question below)
Persian (Farsi) term or phrase:
نانوای نان های حجیم
English translation:
baker of raised/leavened bread loaves
Persian (Farsi) term
professional, reliable and on time
Native in: Persian (Farsi)
Works in: English to Persian (Farsi), Persian (Farsi) to English, PersianOld(ca600-400B.C.) to English, and 13 more.
نانوای نان های حجیم
Dec 21, 2021 05:14: Edward Plaisance Jr Created KOG entry
Proposed translations
20+ yrs experience--native English
Native in: English 
Works in: Persian (Farsi) to English, English to Persian (Farsi)
baker of raised/leavened bread loaves
From this explanation it is clear that in English we would not call this kind of bread "bulk" or "bulky".
If you look up "bulk bread" it means bread in large quantities...عمده فروشی
"bulky bread" would mean oversize bread or difficult to handle because of its size.
I am guessing they use this word in Persian to distinguish it from "flatbreads" such as lavash/sangak/taftun...etc.
Australia
NAATI & ISO 17100 certified, MNZSTI
Native in: Persian (Farsi)
Works in: Persian (Farsi) to English, English to Persian (Farsi)
The baker of bulky and semi-bulky loaves of bread
Professional & Reliable Translator
Native in: Persian (Farsi)
Works in: English to Persian (Farsi), Persian (Farsi) to English, Turkish to Persian (Farsi), and 2 more.
Baker of loaves of bread
Baker of loaves and semi-loaves of bread
https://www.google.com/search?q="baker of loaf bread"&biw=13...
Your words, in a different language!
Native in: Persian (Farsi) 
Works in: English to Persian (Farsi), Persian (Farsi) to English, Persian (Farsi), and 1 more.
The baker of big and medium-sized bread
https://www.tasteatlas.com/bulkie-roll
https://www.kingarthurbaking.com/recipes/naturally-leavened-sourdough-bread-recipe
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