Preheat the oven to 425℉.
Prep the rice and bell peppers first. Place the 1 cup of dry rice on the stove and cook according to package instructions. For the bell peppers, slice them in half the long way then lay them cut-side down on a lined sheet pan. Place them in the oven and bake for 15 minutes. When done, remove them from the oven and allow them to cool while you make the rest of the recipe.
In a pan on medium heat, add the butter and allow to melt. Once melted, add in the flour and whisk the flour and butter for about 1 minute. Now, pour in the milk while whisking. Continue whisking until the sauce has thickened then turn off the heat.
Add in the sun-dried tomatoes, the herbs, then salt and pepper to taste into the sauce.
In a bowl, toss the sauce, cooked rice and the shredded chicken together with 1/2 cup of the cheese. Grab the bell peppers and sprinkle a little salt on the inside to season them a little. Next, spoon the filing into the bell peppers until they are full.
Lay them back on the sheet pan and top them off with the rest of the cheese. Place in the oven and allow to bake for 15 minutes then remove them. Allow them to cool a bit then serve with a garnishing of parmesan cheese and chopped basil.