If you are just slopping Smuckers and Jif on a greasy burger on a wimpy little white bread bun, then the answer is most definitely GROSS.
If you are going to use homemade peanut butter with a little honey for sweetness and a good amount of salt, and if you are going to make your own blackberry jam, and if you are going to go light on each and respect the beef, then it could work.
That looks like the burger threw something up. A cheeseburger with peanut butter is actually really good. Adding jelly…not so much. The pic does no justice on how a really good bacon cheesburger with mayo on the bottom and peanut butter on the top could really look…about as good as one really tastes!