Born in Amara, Romania,[1] Chidu came to prominence in 1988 when she won the 800 m Romanian Championships in 1988 with a time of 1:57.80 minutes.

[3] On her international debut she was the fastest non-qualifier in the 800 m heats at the 1989 IAAF World Indoor Championships, coming third in her race and seventh overall.

[3] Chidu switched to the 1500 m for the 1991 IAAF World Indoor Championships and the change brought her a bronze medal behind Lyudmila Rogachova and Ivana Kubešová.

[8] The second a final global medal of Chidu's career was earned at the 1995 IAAF World Cross Country Championships.

She finished the senior race in 22nd position, which was sufficient to help the Romanian women's team of Gabriela Szabo, Elena Fidatof and Iulia Negura into the bronze medal spot.