When I snack throughout the day as long as I don't overdo it I generally feel ok save for immune system going a bit nuts and trying to burn my face off. How I feel after eating a larger meal is very complex and depends on a million factors. I tend to need to eat a lot at once because for some reason overloading myself with food calms my system down more, I guess what could be happening is that the problematic bacteria in there when there is so much food can't completely release their toxic load when there is too much in the way that causes the immune reactions.
Like for example of this weird phenomenon a couple nights ago I went out with some family to some all you can order Japanese place. Everything here normally besides some cucumber avocado rolls would flare what I have going on into oblivion but I only ended up very tired with less of a face burning, insomnia fest after. But the very next day I had a little too much peanut butter when I was snacking and ere comes the hot face, fatigue, brain fog, and other assorted neurological nonsense.
I know I shouldn't even be eating that but peanut butter unfortunately is one of the only things I just tolerate enough to get me through the day fat and protein wise. I can't handle eating land meat but for some reason seafood is generally ok. I react radically different to chicken and beef for example too, it's very strange. . I know if I have way too much histamine things can get pretty bad but my triggers are all over the place and seem more consistent with some kind of invasive bacteria/pathogen in my guts because of how consistent but in not alignment with any overall sensitivity structure.
There is a reaction symptom cross section with me on most things I eat though whether it be immediately or I have too much. I'll get a hot head/face (forehead and cheeks, ears can turn red if it's bad enough, I'll get intense brain fog, erectile dysfunction, a sense of impending doom, an increase in tinnitus, twitching, and insomnia.
What is really interesting about meat though is that it will override that symptom set depending on if it is chicken or beef. Chicken makes me very drowsy, warm, and gives me some weird kind of mania at first which drops off into complete lethargy the next day and a climb out of it the day after. Beef is like shooting me with a tranquilizer dart, doesn't produce the burning face/hot head thing, gives me weird different feeling depressive brain fog, and will make me sleep like a rock. The chicken or beef effect also doesn't flare the tinnitus. Gluten itself, like say I just have some plain bread makes me kind of tired and brain foggy instantly and for a day after but it's actually the lesser of all evils. In fact I'd go as far as saying I have probably one of the most bizarre cases on this forum after reading through here but some people I found actually have nearly identical strange one's that are almost just like mine.
I'll dig and post around forum more generally will be keeping up in my profile blog here if anyone wants to follow this madness.