Yes, in fact we have some early support for Firecracker, where we can at least boot some basic Unikraft images with it (e.g., see page 10 of this paper[0], FIgure 10, where we get the shortest boot times with Firecracker). We're still missing networking supporto on FC, which we're working on.

[0] https://dl.acm.org/doi/pdf/10.1145/3447786.3456248