The Fed chair is trying to manage the economic policy transition by reducing economic activity to match intentionally diminished energy supplies. Lowering economic activity drops demand for energy. Unfortunately, as admitted by Powell today, this means a period of “some pain” for Americans as the central banks join together in an effort to lower consumption.

https://theconservativetreehouse.com/blog/2022/08/26/jerome-powell-says-fed-effort-to-make-u-s-economy-smaller-will-create-some-pain-for-americans-during-biden-transition-to-clean-energy/

Inflation is a part of "some pain".