Fending for myself in the kitchen is never a problem for me since I'm the cook in the family!
Not sure if you are looking for protein snacks or meals so I'll list both:
Protein Snacks that fill me up:
-cheese (just a cube of any kind of cheese)
-egg (not a real fan of hard boiled eggs, but I usually have a few on hand and will cru**** with a fork add a little lite mayo and some onion and just eat it from a bowl.. no bread)
-oatmeal (not something I crave while watching tv but easy to prepare and fills me up)
-chicken (buy rotisserie chicken at Costco, cut up a bunch of chunks in salad, or same deal as the egg, I mix with mayo and eat "chicken salad" from a bowl)
-milk (a glass of milk is actually pretty filling.. add a scoup of protein powder, a banana and some sugar free flavoured syrups and it's a meal)
-meat.. pretty much any kind of meat.. slices of cold cuts, reheated left overs, pepperettes etc
-popcorn.. not much protein, but I buy the "smart pop" (I confess I melt a little butter on it) but 1/3 of a bag fills me up and satisfies the need to chew.
Since my 5 sons have grown and left home, food prep seems like a lot of work for the little bit my wife and I now eat.. so I cook a big batch and freeze it in smaller containers.
-chili (the first real food I ate and still a regular staple) make a pot and freeze it in individual servings
-meat balls, I cook up a whole batch then freeze them in baggies (quick meal)
-Rotisserie chicken, it's moister than other chicken, I usually "butcher" it when I get it home and make soup or stew with the bones.. lots of chicken chunks in the soup (again frozen in individual portions)
-ribs.. I buy these boxed frozen ribs (1 slab per box) 1/2 a slab 6 " fills me. I never dump so the bbq sauce doesn't bother me
-mini "new" potatoes. I can't eat a whole potato.. those little ping pong ball sized new potatoes are perfect.. boil a bunch. left overs heat up in a couple seconds in microwave
-slow cooker anything. Dry meats don't sit well. but if I throw a chunk of beef in the slow cooker, and let it cook all day.. it just falls apart and is very moist.. Same thing with a chunk of pork (add bbq sauce while it's "stewing" ) and you'll have pulled pork a few hours later.
For some reason I've developed a sweet tooth post surgery.. Never used to be one for desserts
Now I crave something sweet after dinner.. even when I'm full.. (again.. I don't dump so sugar doesn't bother me)
-jelly beans.. 4 or 5 handle the craving for something sweet
-Dad's Oatmeal Cookies.. eh. it gives ya a little bit of protein
-home made ice cream.. I've got this little cup sized machine.. add skim milk, flavoured syrup, some nuts, stir it a few times and I get ice cream without all the sugar and fat
Hope that gives you some ideas.