Specific layout for search page?

I have a ton of products that I marked with a specific product filter but the search page which shows the results of that filter has the product images overlapping each other! If I change the layout to “list without options” they appear fine. As a normal grid layout, it is bunched up!

How can i change the layout of search results to appear products without results?

I guess you have to set the thumbnail size in the appearance panel. I’m not 100% sure, but you could take a look in to it.