Season the chicken with salt and pepper to taste and grill or bake to an internal temp of 165 degrees F. Dice and place in a large bowl.
Meanwhile, cook the pasta as directed on the package.
While the pasta and chicken are cooking, dice the bell peppers, cucumber, and grape tomatoes and place in a large bowl.
Once the pasta is done, drain it, rinse with cold water, and add to the large bowl with the chicken and veggies.
Add the Italian dressing to the bowl and mix to coat the mixture. Add more if needed to desired taste.
Store in an airtight container in the fridge for up to 4 days. Enjoy!
*if you'd like to prepare this dish vegetarian or vegan, simply add your protein of choice to the mixture when you add the pasta and mix!