[Fizzlemizz]

It's a mystery. You have:

itemTexFrame.lua

ITEM_TEXT_FONTS = {
    ["ParchmentLarge"] = {
        ["P"]  = QuestFont,
        ["H1"] = Fancy48Font,
        ["H2"] = Game20Font,
        ["H3"] = Fancy32Font
    },
    ["default"] = {
        ["P"]  = QuestFont,
        ["H1"] = QuestFont,
        ["H2"] = QuestFont,
        ["H3"] = QuestFont
    }
};

local fontTable = ITEM_TEXT_FONTS[material];
if(fontTable == nil) then
    fontTable = ITEM_TEXT_FONTS["default"];
end
for tag, font in pairs(fontTable) do
    ItemTextPageText:SetFontObject(tag, font);
end

But that signifies a change to SetFontObject so maybe something along the same lines