The picture on the website should give you a pretty good idea --
https://www.delta.com/us/en/onboard/...ce/first-class
Chips, granola bars, cookies, nuts. There's a few not pictured like VEGOBEARS gummy bears (and I think they still have the Michel et Augustin cookie squares).
As noted on website, only flights over 900 miles (great circle distance) get meals.