Considering Peyton Reed directed this episode and is also well known among fans as the director of the Ant-Man movies, this is much too close to be called a coincidence.
In The Mandalorian’s tenth episode, Din Djarin pays a visit to Mos Eisley Cantina. There, he encounters mechanic Peli Motto (played by Amy Sedaris) in a high stakes game of Sabacc with a large, ant-like creature. Given Peyton Reed’s past arachnid filmography, it’s hard to imagine that this wasn’t a reference to the Ant-Man franchise within the Marvel Cinematic Universe.
Comparing the final scene of 2018’s Ant-Man and the Wasp to “Chapter 10” of The Mandalorian…
Little is known about this insectoid species within the context of the Star Wars universe. Pelli Motto calls him “Dr. Mandible” at one point, but it’s unknown if that was just a nickname. His species also doesn’t currently have a name, but one can bet that it’s only a matter of time until a companion book or a tweet from someone with the Lucasfilm Story group provides additional information on the giant bug.