The spelling of the word "Chesnie" may seem peculiar to some, but it actually follows the rules of English phonetics. Using IPA transcription, we can break down the sounds in the word. The "ch" sound at the beginning is pronounced as /tʃ/ while the "e" following it is pronounced as /ɛ/. The letter "s" in the middle is pronounced as /s/, and the "n" is pronounced as /n/. Finally, the "ie" at the end is pronounced as /iː/. Putting it all together, we get the IPA transcription of /tʃɛsnɪ/.