Cut the peppers in half through the stem and remove any seeds and membranes. Place on a half sheet pan and roast in a 425ºF oven for 20- 25 minutes while you prep the filling. The peppers should be mostly tender before filling.
Heat the olive oil in a skillet over medium-high heat before adding the chicken. Season with a pinch of salt and black pepper. Brown both sides and fully cook the chicken.
Add the Greek seasoning and water, bringing to a boil. Add the Right Rice, cover, and turn off the heat. Leave covered for at least 10 minutes while the rice absorbs the water and you prep the remaining veggies. (There shouldn't be any water remaining in the chicken and rice.)
Mix the remaining ingredients in a large bowl, including the ground chicken and rice.
Add the filling to the peppers and bake for an additional 15-20 minutes until the tomatoes begin to wrinkle and the edges of the peppers slightly brown. Serve with parsley, lemon wedges, feta, Kalamata olives, if desired.