Dice your chicken and veggies into small cubes.
In a large bowl, whisk the Greek yogurt, Dijon mustard, vinegar, and honey. Season with sea salt and pepper to taste (about 1/4 teaspoon each) then whisk until smooth.
Add in all your prepped veggies and chicken then stir well to combine. Taste test then adjust ingredients and seasonings as desired.
Spoon mixture into each pepper half with your chicken salad and enjoy!