As long as the prey size is about the same size as the biggest part of his body is round, I think it should be fine.
I remember switching my BP to rat pups, and how I was soooo nervous watching him eat it because it was so large for him! They should be fine, I think that they’d spit out the food if it was to big to consume. Just make sure to give them a good 2 days afterwards to digest!
You could also feed the pinkies! Just watch them afterwards, if they keep moving around and looking for more food feed them more.
My BP was eating 2-3 mouse hoppers when I sized up his food, I used up all of the mouse hoppers before I switched him too (because I only have one BP and I didn’t want to waste the money I spent on the mice haha)