Gracious
Janicia is a modern American elaboration of Jane or Janice. It combines the traditional Hebrew root meaning 'God is gracious' with the rhythmic '-icia' suffix found in names like Alicia or Felicia.
Less common today
Janicia isn't in the latest US Top 1000. It last peaked at #7,377 in 1991.
US births per 5-year period, 1990βpresent (SSA data).