Greece Chalkias started his career in the
Panathinaikos youth academy in the 1994–95 double winning team. He was transferred to feeder club
Apollon Athens in 1996 as a replacement for retired
Antonis Minou, signing a five-year professional contract. His solid performances helped Apollon avoid relegation from
Alpha Ethniki and made him return to Panathinaikos two years later, in 1998. However, he did not get any playing time at Panathinaikos by his head coach
Vasilis Daniil and in January 1999 he was re-sent to Apollon on loan for six months. After his return, he was forced to play third keeper to the legendary
Jozef Wandzik and Greek legend
Antonis Nikopolidis. He made a total of 25 starts over the next three years between 1998 and 2001 for Panathinaikos and was transferred for two seasons to
Iraklis before good performances led to a return to Panathinaikos in the 2003–04 season. After playing second fiddle again to Nikopolidis during most of the 2003–04 season, he was allowed back into the first team after a dispute Nikopolidis had with management.
Going abroad At the end of the 2003–04 season, Nikopolidis was let out on a free transfer to bitter rivals,
Olympiakos, and a new keeper was bought,
Mario Galinovic. After a fight for first team football, eventually Galinovic won out and due to overseas interest, Chalkias was shipped out to English side
Portsmouth F.C. in January 2005, making his debut in the
FA Cup fourth round tie away at fierce rivals
Southampton. Over the next few matches Chalkias's wild tactics and inconsistency led to some poorly conceded goals, and he was soon dropped and replaced by
Jamie Ashdown. With the signing of
Sander Westerveld in July 2005, Chalkias fell even further down the pecking order, and in January 2006 he left Portsmouth by mutual consent, having made only five league appearances for the club. Shortly after his release from Portsmouth he joined
Segunda División side
Real Murcia.
Return to Greece Chalkias was bought in the summer transfer window of 2006 by
Aris Thessaloniki, who were then newly promoted to the
Super League Greece. After his transfer to Aris, Chalkias regained some of the form that he showed during his bright run in the first team for Panathinaikos and after an exceptional season, he was recalled tο the national team and gained a starting spot over
Antonis Nikopolidis after the latter's poor performance earlier in a
Euro 2008 qualifying match against
Turkey. Chalkias left Aris in late May 2008 after his contract was due to run out and on 28 May 2008 he agreed to sign a two-year contract for rivals
PAOK, thus becoming the third player to have played for the all three major clubs of
Thessaloniki (Iraklis, Aris, PAOK) following Apostolos Tsourelas and
Stefanos Borbokis. After four years of inactivity, he returned to the football for the Greek team
Panachaiki. He was the last player from the legendary
Euro 2004-winning
Greece team to retire from professional football. ==International career==