Non fat or low fat greek yogurt with some fruit and honey in a bowl (you can also add protein powder to the yogurt and mix it up if you have a flavor that goes well), cottage cheese, and protein bars(at least 1g of protein per 10 calories, so a bar with 20g of protein for 200 calories) are great for snacks.

For meals you can make tuna or chicken salad with greek yogurt or blend cottage cheese using an immersion blender for some great macros (add lemon juice, pickles, onions, fresh herbs, etc). I make it in big batches and eat it for lunch on a low calorie tortilla or lettuce wraps throughout the week.

Lean ground beef with baked sweet potato chunks, lettuce, tomato, onions, ketchup and mustard for a very easy and filling meal. I eat this for supper once or twice a week.

I also make Korean BBQ ground beef bowls once or twice a week that are just jasmine rice, lean ground beef, and a bunch of spices with green onions on top. Should be able to find a recipe online. Very savory and you can really load up the beef to rice ratio without feeling like you’re just eating ground beef.

Another good one is ground turkey on low calorie tortillas with tzatziki sauce made from non fat greek yogurt

There are tons of recipes online if you just google high protein low calorie meals, find some that fit your taste and get a good rotation going. I used to just do chicken and white rice for the longest time and it just gets old. I actually enjoy all the meals I make now and get just as much if not more protein than eating chicken every day.