High protein snacks?

You could just eat more protein in your meals to hit your numbers?
Make a bigger lunch/breakfast and save some for later?

Almonds or other nuts, low fat string cheese, non-fat Greek style yogurt, and beef jerky.

Greek yogurt
Nuts
Seeds
Beef jerky
Ostrim meat sticks
Hard boiled eggs
Protein bars
Protein shakes
Cheese

Eggs for snacks?
Peanut butter on bread? (depending on type of bread and amount of peanut butter, you could get about 100 calories for a slice + peanut butter. And using like a wholegrain / seeded bread, you might be able to get even up to 15 grams of protein from that snack or more.

Various nuts?

Just a plain protein powder shake, for a standard 23grams or so of protein for just over 100 calories? Mix it with a protein milk instead of water, and you can get like 30-35 grams. Or just use more protein powder and keep it with water, for 40-50 grams for just 200 calories.

If you can find a decent protein bar for under 200 calories? I hear quest bars are good. BUt never tried one personally. And what few protein bars i've seen, are like up to 300 calories or more even.

I like to have protein powder with my porridge. Can make it snack sized - calorie wise, just by cutting down on the oats and protein powder, to make it 100-250 calories depending on how many calories you're happy to have for a snack.

Mix in things like nuts and/or seeds with some yogurt (fat free yogurt for lower calories while keeping protein about the same or whatever).
Can also mix those same things into porridge too.

Look up how to make some little protein snacks. Like protein pancakes, protein bites or cookies or whatever too. If you have protein powder its pretty versatile.
You can make types of protein bites/pieces/cookies just by mixing together some oats, banana, and protein powder or nuts or something and baking them for 10-15 mins.
There's another one i've seen online where its just a banana cut into pieces, covered in melted peanut butter and then frozen. Wouldn't be much protein, but I mean for tasty little snacks that aren't your usual, it can be nice I guess

They sell Perky Jerky at Home Depot. No carbs! Yep, grocery shopping at the hardware store.

quest bars are a delicious way to add some protein to your snacks usually about 20g of protein per each bar and under 200 calories with various amounts of fiber my favorite flavor the "chocolate brownie" contains 20g protein 19g fiber and is only 170 calories. when im feeling like chocolate and want to be good i eat these because they taste amazing!

Roasted chickpeas are awesome, just google any recipe. Really good with curry.