Multiple sites on 1 server reading the wrong config settings file

I have 2 sites on one server and they operate independent of each other and both have their own config settings file. Of the 2 sites, one sends leads that register to a 3rd party crm and the api key that is needed is inside of the settings file. One site has the api key and the other is blank (see below). However both sites are pushing leads to the 3rd party crm, without their being an api key, how could it possibly be doing that? The only thing I can figure is that somehow it's picking up the api key from the other sites settings file but that doesn't make sense either. Any idea why I'm running in to this issue?

Site1 Settings File

fubApiKey='UniqueApiKey'

Site2 Settings File

fubApiKey=''

I have already tried php artisan config:clear & php artisan clear-compiled