Chris Dalton contributed to the MCPJam/inspector repository by focusing on security and user experience improvements using React and TypeScript. He implemented OAuth state management, introducing a method to generate unique OAuth state strings and ensuring their secure removal from local storage, which strengthened the integrity of the OAuth authentication flow. Additionally, Chris addressed a user interface issue by fixing the Add Server dialog so it no longer closed when clicking outside, thereby reducing accidental interruptions and improving reliability. His work demonstrated a solid understanding of OAuth protocols and front end development, delivering targeted solutions to enhance both security and usability.