Rant about my man

So last night were watching this series were both getting into. In between episodes he goes to the shop to get sugar for tea and asked did i want anything, i seen an advert for Pringles and asked him to pick me up some salted ones. Bear in mind he's on a diet and due to start with a personal trainer soon to join the police force and we have talked many times about what he needs me to do to help him because his weight gain is really effecting him and holding him back from his dream career, so he said he would like me to stop him from himself , to give off when he tries to eat crap and to take things off him if he gives into temptation, i don't mind that at all. So were sitting watching this show, he comes in with yogurt and chocolate covered peanuts for himself, energy drinks, double chip cookies and Pringles for me. He scoffed the bag of nuts so quick (he eats a handful at one time, not even tasting just scoffing them so quick), i gave him 4 Pringles which he shoved into his mouth before i could even say "eat them one by one so you can actually enjoy them and they'll last". Then this morning i wake up and hes staring at the ceiling MADDDD as hell, took a while to get it out of him but he finally said "you wanna know whats wrong!? You stopped me eating what i wanted to and sat there eating your Pringles". Wtf? We agreed to cut the shit down, i had like 10 Pringles one by one there's still 2/3 of the can left, but if he was eating them the whole thing would have been enhaled in a few minutes! And because he has to watch his weight (18 stone), i cant enjoy some chips while watching Netflix? Bear in mind he had his bag of yogurt and choc nuts and cookies which i didn't have. Ugh he's so annoying!!!