The Belgian National Congress of 1830 originally choose Prince Louis, Duke of Nemours, as King, however this was rejected by the Great Powers, specifically Britain, in order to prevent any of them from gaining influence in the new state. Similarly it'd be difficult for a Hapsburg to be acceptable to the other great powers in order to prevent Austrian influence.
As well you have to consider that the Belgian Revolution was mostly based out of the French-speaking, Catholic, Walloons, who were feeling oppressed by the Dutch- & German-speaking, Calvinist, Dutch of the north. There were also something of a class movement to it, as much of the industrialized in the United Netherlands was occurring in the south; however the benefits from such was mostly flowing to the north as capital and power accumulated in the hands of the Dutch aristocracy & land-owning gentry. So inevitably any populist constitional monarch elected from an assembly that represents such forces behind a revolution will favor a French-speaker, and one who is small-c Catholic; that the delegates didn't get such a person owed more to the power power geopolitics across Europe at the time than their own wants and desires.
The other major options the delegates debated were Auguste de Beauharnais, Duke of Leuchtenberg & Napoléon's step-son, and Archduke Charles, Duke of Teschen & the last Hapsburg governor of the Austrian Netherlands. In the first round of voting Prince Louis received 89 votes, Auguste 67, and Archduke Charles 35. In the second round it was 97 for d'Orléans, 74 for de Beauharnais, and 21 for Hapsburg. Following such a deadlock in February of 1831 the Congress elected Erasme Louis Surlet de Chokier as Regent (by 108 votes, against 43 for Félix de Mérode & 5 for Étienne Constantin de Gerlache), and by June of that year de Chokier had selected Leopold of Saxe-Coburg-Saalfeld to the position, on the advise of de Gerlache. Interestingly de Mérode only lost the election to the Regency after campaigning against his own selection, believing that his low status as a mere baron (or count; English, French, German, & Dutch records differ on his status before the Revolution) would harm the legitimacy of the Belgian's movement for independence; his personal preference for the throne was Prince Louis - however following that he supported the election of Prince Otto of Bavaria (who IOTL was elected Otto of Greece in 1832).
So you can none of the prime movers-and-shakers, and nowhere near a majority of the delegates, in the Belgian Independence movement supported a return to the Hapsburgs. You'd need a radically different independence movement & Belgian Revolution, likely one that's more conservative/reactionary, to get the Hapsburgs on the throne in 1830 - and I'm not sure how you could get them there after Leopold had been installed.