This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
The exact historical development of 辝 is uncertain. It appears to combine 台 and 辛, but the original semantic and phonetic roles are unclear.
Since the meaning is unclear, focus on the shape: 台 (platform) beside 辛 (spicy/bitter). Imagine a bitter platform with no clear purpose.
For ジ, imagine a mysterious character named G who stands on the bitter platform: G -> ジ.