Small Gods by Terry Pratchett

Regarding location - Google will may say that the Hugh is closed, but it is not. We will meet inside the food court and there will be sign holders on the table with the book cover on it.

From Good Reads:
In the beginning was the Word.

And the Word was: "Hey, you!"

For Brutha the novice is the Chosen One. He wants peace and justice and brotherly love.

He also wants the Inquisition to stop torturing him now, please...