Can quitting an ssri cold turkey cause you to have seizures after being off the ssri for 7 months?

Not likely: If you're having seizures for any reason, it's best to consult a neurologist. The possible causes are many -- including anything from drug abuse/withdrawal to inflammatory diseases to brain tumor. But, probably unrelated to your ssri experience.

Not likely, so...: ..Long after discontinuation, the but question suggests an important concern that should definitely be discussed with an md (and a neurologist in particular). There is an "ssri discontinuation syndrome" that research puts at about week after stopping, usually abruptly. This research is still a work in progress.

Not related: Your ssri pattern has no effect on the development of seizures, and you need to explore the problem with a local neurologist and try to uncover causation, and get these seizures under control.