Fish
Cottage cheese
Eggs
Whey protein
Peanut butter
Cereal (e.g., Kashi GoLean)
Milk
To name a few.
To add to this:
Cheese
Legumes
Nuts
Yogurt
Sliced deli meats (including chicken!)
You can also try combining some of these things:
-Make your oatmeal with milk instead of water, mix in some plain or vanilla protein powder, then pour some yogurt on top.
-Mix a roughly 1-to-1 ratio (or whatever you find tastiest) of peanut butter and cottage cheese together (I swear, I found this on a FitGAF thread, maybe OT1 or OT2, and it's awesome) for a quick snack.
-Toast an English muffin, cook a couple eggs, put the eggs in the muffin with some cheese and a little bit of bacon or deli-sliced ham (if you can stand bacon/ham, you mentioned not liking most other meats so if not then just leave 'em off!).
I would also recommend trying different ways to prepare your chicken:
-Standard stove-top cooking, but use different dry seasonings (try: making it spicy with dried pepper and some salt, or use garlic and onion powder, or use one of the various Mrs. Dash line of mixed seasonings, or try rosemary with black pepper)
-Standard stove-top cooking, but use different wet sauces (try: BBQ, or marinate in your favorite salad dressing overnight [I like Italian dressing for this], or soy/teriyaki sauce)
-Finally, try any of the above but prepare it different; shred the chicken up to make pulled BBQ chicken sandwiches, slice it up and eat it on a salad, dice it up and throw it in a tortilla with black beans, cheese, guacamole, and salsa.