The Gabon international put the Gunners ahead in the seventh minute to stretch his dominance at the summit of the scorers' chart to 13 goals in 19 league appearances.
30 - Pierre-Emerick Aubameyang has been directly involved in 30 goals in 32 Premier League appearances for Arsenal (23 goals, 7 assists). Flames.— OptaJoe (@OptaJoe) December 26, 2018
Aubameyang calmly finished off an assist from Alexandre Lacazette in the top right corner before Jurgen Locadia levelled terms for Brighton in the 35th minute.
Both teams struggled for a winner in the second half and finally settled for a share of the spoils.
Aubameyang played for the entire duration while Iwobi was introduced for Mesut Ozil in the 46th minute and Nigeria defender Leon Balogun was on for the entire duration for the Seagulls.
The stalemate moved Arsenal to fourth in the Premier League table with 38 points from 19 games. They visit Liverpool next on Saturday.