Are bulging eyes normal?

I don't think so. Sometimes people who have a bad thyroid, have bulging eyes.

Depends to what degree.
Overactive thyroid glands can lead to conditions like Graves Opthalmopathy causing bulging and misalignment of the eyes.
As seen here by the late Marty Feldman

They're a sign of an abnormal thyroid actually.

Graves’ disease.

Depends.

No..can be a sign of thyroid issues

Nah... Could be Grave’s disease.

On some fish maybe!?

Ask Marty Feldman