I figured it out using the same logic found here: UE4 Tutorial: Sprinting, Stamina/Hunger, and HUD tutorial - YouTube
I basically set another float variable for hunger and hunger decay (like he does with sprint and sprint decay) and went into my inventory widget, set a bind for my “Use” button, casted it to my FPCharacter, broke my item structure and then after referencing the class BP you want to use (in my case, my food BP) I had it set the float variable (in my case hunger) back to max. I’m still not sure how to make it increase based on multiple items with different values without setting a new function up for each item, but if I figure it out I’ll edit this answer.