Yes. On Stripe > Connect, when your account has more than one kitchen location, there is one button per location. A location that is already connected with live keys shows as a green <name> (check) button that is disabled; a location that still needs onboarding shows Connect <name> with an X icon. Click each Connect button and complete Express onboarding for that location. With a single location there is just one button for the whole account.

You can also start onboarding for one location from Settings > Kitchen Locations > edit location, where a Connect Stripe button appears in the page header until that location is live-connected (it requires the Connect Stripe permission, and it only appears when Stripe is enabled as a payment method for that location).