I am going to make some suggestions not necessarily because what you are doing is bad, but because my aim is to maximize healthy longevity.
Supplements: multivitamin
Don’t waste your money on cheap synthetic multi-vitamins. I believe there are a couple of things to look out for. About 40% of the population has issues methylating vitamins they need. Unless you have done genetic testing to determine your status, just buy the multi-vitamins with methylcobalamin(B12) rather than cyanocobalamin and methylfolate rather than folic acid. The cheap vitamins virtually always have synthetic forms of the various B vitamins. Unless you get sun every day test your D level, and supplement appropriately. For me that is 10,000 IUs/day or 250 mcg of D3 in the winter time. Multi-vitamins have way too little.
fish oil (twice a day - 3000mg total)
I know it’s a thing, but I don’t like fish oil. Instead I eat wild salmon, and supplement with calamari oil and krill oil which still has its astaxanthin. Astaxanthin is a powerful natural antioxidant coming up the food chain from plankton, which protects the omega 3s from oxidation. Calamari oil has much less danger of mercury toxicity than fish oil, and doesn’t make me burp.
coq10 (300mg),
Nothing wrong with CoQ10, but our bodies make it, although it lessens with age. If you are on a statin I believe it is important to supplement it. I believe it to be an important antioxidant for LDL. However, I believe Ubiquinol is more potent for this purpose, so have opted to supplement it instead.
turmeric
I don’t particularly like turmeric in my food, so supplement with a turmeric/ginger combo
K+D3
I believe I lowered my blood pressure with vitamin K2 at around 150 mcg/day.
I take fiber twice a day (generic metamucil - 1tsp morning and night) to keep things regular.
I have used fiber supplements after rounds of antibiotics which messed up my digestion. Not only does it help clean out unwanted waste, it feeds the beneficial gut microflora. However, I prefer to get soluble fiber regularly from berries and a few other fruits(I am not carni).
What I’ve been eating: ground beef (hamburger),
I believe this is actually beneficial if purchased in low oxidized packaging, and is grass fed. Ground beef will provide some collagen, and grass-fed means it will have an optimal omega 3 profile and maybe some vitamin K2. Grass-fed is more important than “organic.” It can be had at Kroger affiliated stores, Sam’s Club, and Walmarts prepackaged without air. That is optimal.
chicken (grilled chicken, sometimes smothered with cheese)
I like the thighs
egg white omelets with veggies (spinach, onion, mushrooms, tomato), various cheese
Ditto on the other member who said eat the whole egg. Buying egg whites means the egg has been exposed to air on a prolonged basis, and the contents will be becoming oxidized. Nope. Eat fresh - preferably “pasture-raised”
occasional grilled chicken salad
canned chicken is going to be oxidized. Do not use mayonnaise with cheap vegetable oils. I use avocado mayonnaise, because the monounsaturated fats in it are much less likely to be oxidizing the contents.
Occasional tuna patty (tuna, egg whites, cheese).
Sorry to burst your bubble, but canned tuna is a highly oxidized food. Now I eat whole canned sardines instead - preferably Wild Planet.
Occasional bacon.
Cured bacon has nitrites. I buy uncured, sugarless bacon.
Occasional order out and get garlic parm wings. To add flavor I sometimes use G. Hughes sugar free BBQ sauce.
The only BBQ sauce I have ever considered “healthy” was Kinder’s No-Sugar, which had some allulose. All the rest seem to be sweetened with artificial sweeteners like sucralose which are damaging to the gut flora.
I use stevia as a sweetener if I need it.
Consider also xylitol, erythritol/monk fruit, and allulose although I usually use stevia for drinks
What I’ve been drinking: Diet tea - mostly splenda peel and pour. Water. I don’t drink soda’s (called pop here in Pittsburgh).
Sorry, recommend staying away from Splenda. I make my own herbal teas which I may sweeten with stevia.
I eat twice a day since I hate breakfast. I try to alternate red meat days with white meat days to keep variety.
I eat twice a day too, but including breakfast.
I am tempted to try OMAD, have heard good things.
I have been doing OMAD on M, W, and F for the last 3 winters. I do resistance training at the end of each, and pile on the protein. Seems to work for me. It helps supress insulin and mTor until I want them for protein synthesis. It also promotes stem cell generation.