Kiazim beat seven other finalists on the BBC show for the chance to serve dessert at the dinner celebrating 140 years of the Wimbledon tennis championships.
She impressed the judges with her dish of white peach and raspberry jelly, served with peach sorbet, raspberry and rosewater sauce, almond shard, and a peach bellini.
Kiazim will be joined at the banquet by the three other winning chefs, who were chosen this week after triumphing in the regional heats.
Murano head chef Pip Lacey will serve the starter, Tommy Banks from the Black Swan at Oldstead is creating the fish course, while Michael Bremner from Brighton’s 64 Degrees will cook the main.
The final show of the series will air tonight on BBC Two at 8pm.