Yes, kangaroo meat is halal.

Explanation: The basic principle regarding the permissibility of eating the meat of animals is that it is halal (permissible) unless there is evidence that prohibits it. Kangaroo meat is permissible to eat because kangaroos are not classified as predatory animals that use their fangs to catch prey, and they primarily consume vegetation.

Sources:

• Alhamdulillah, the general ruling on eating animal meat is that it is halal unless proven otherwise. Since kangaroos are not considered predatory animals and they feed on plants, there is no prohibition on consuming their meat.
• Islamweb Fatwa on eating kangaroo meat

And Allah knows best.