Hi Troy,
Of course! You can easily modify this with CSS like so:
.eventbrite-ticket-embed iframe {
height: 200px;
}
You can add that to your themes style.css, the events.css (make a copy of the file in /wp-content/plugins/the-events-calendar/resources/events.css and place in an ‘events’ folder in your theme) or tribe-events-community.css (make a copy of the file in /wp-content/plugins/the-events-calendar-community-events/resources/tribe-events-community.css and place in an ‘events/community/’ folder in your theme)
I hope that helps but let me know if you need any other help with this!
Cheers,
Jonah