No issue for Islam.
Maybe you see that God created only this single world and that God did not create humans besides you. Well I swear by God that God created thousands and thousands of other worlds and thousands and thousands of humankind. - Imam Muhammad al-Baqir.
The Qu'ran calls Allah the "Lord of the Worlds" and states "He has created other things of which ye have no knowledge" as well as "And of his signs is the creation of the heavens and earth and what He has dispersed throughout them creatures." There's also indications that creation has happened multiple times: "And it is He who begins creation; then He repeats it, and that is [even] easier for Him. To Him belongs the highest attribute in the heavens and earth. And He is the Exalted in Might, the Wise."
So even a literal reading anticipates life off of Earth, and has been discussed among scholars for centuries. A literal reading also states we'll meet eventually, though no indication where and when, and it can be argued it doesn't specifically say we'll be alive when we meet.