A first half Anthony Edgar goal on his Bay debut and another after the break from Ryan Cooper brought Chichester's run of four games unbeaten to an end up in North Kent.
A Josh Clack double from the spot and a late Scott Jones goal sealed back to back home victories for Chichester as they saw off a spirited East Grinstead.
Goals from Scott Jones and Jamie Horncastle helped Chi to a second victory over VCD Athletic in less than a fortnight and a first win at home in the league since the end of August.
Tonight's Isthmian South East league match at Oaklands Park against Herne Bay has been postponed due to a waterlogged pitch.
Chichester had to settle for a point as a resilient Whitstable side scored late on to deny ten-man City back to back victories.
Chichester bounced back to winning ways thanks to first half goals from Kaleem Haitham and Gicu Iordache and a super Josh Clack finish after the break.
2019 was a memorable year for Chichester City but 2020 started with a defeat away to Faversham Town as substitute Osman Proni grabbed an 85th minute winner and Chi finished with ten men.
Goals from Jamie Horncastle and Scott Jones looked to have given Chi all three points in their last game of the year but Max Miller’s equaliser deep into time added on meant they had to settle for a share of the spoils.
Chichester City welcome Burgess Hill Town to Oaklands Park on Saturday 28th December for their last game of 2019.