Italics and Quotation Marks

Q. Should numerals and spelled-out numbers be italicized if they’re being referred to as numbers, as in “The number twelve is significant in the Old Testament”? What about a personal name being referred to as a name?

Q. Does the rule in CMOS 7.53 about non-English words hold for names of food and dishes, even if there is no English equivalent? For example, “He made rustici, Italian pastries.” “Her favorite dish is aloo paratha.” “My favorite dish is kacchi biryani.” Should “rustici,” “aloo paratha,” and “kacchi biryani” be in italics?