You would be right IF "chiedere" were a regular verb. But it's not. Sadly, many / lots (sometimes feels like most?) verbs are irregular in the Passato Remoto.
chiesi, chiedesti, chiese, chiedemmo, chiedeste, chiesero
I've noticed that the irregularity of the first person singular, third person singular, and third person plural often seems to follow a pattern based on the past participle as a sort of root. Past participle for "chiedere" is "chiesto"