Question: TIA. Is it possible to run Linux binaries like chrome without building from source as unikernels?

Answer: 
OSv unikernel (<http://osv.io>) is the answer.
It is indeed possible to run arbitrary linux ELFs as unikernels via tools such as <https://ops.city> && using the Nanos unikernel <https://github.com/nanovms/nanos> .

However, chrome itself would not be supported currently as that is a gui program and at least for Nanos programs they are server-side only.