Update: As someone kindly explained to me in the 1inch Discord, swapping ETH-CHI in the new app: 1inch.exchange/#/ETH/CHI, is cheaper most of the time compared to minting which is why the minter is not in the new UI.

Original: This post was a bit confusing until I found the help article, What is Chi gastoken and how does it work?, that explained how to access the Chi Minter via the legacy version of the app, legacy.1inch.exchange/#/ETH/CHI, and not the latest version, 1inch.exchange. I was attempting to access the Chi Miner via the latest version and could not find it since it has not been implemented yet.