Preheat broiler to high.
Slice the tomatillos in half lengthwise, and place cut-side down in a baking dish. Roast under the broiler 6 to 8 minutes, until skin takes on a darker color. Remove from the oven and let cool.
In a food processer, add cooled tomatillos, chopped onion, garlic, lime juice, jalapeños, salt, pepper, and cilantro. Blend until a puree is formed. Pour this mixture into a small freezer bag, remove excess air, and seal.
In a small mixing bowl, mix together cumin, chili powder, and paprika. Sprinkle this mixture evenly over chicken breasts. Place seasoned chicken in a freezer bag, remove excess air, and seal.
In a final freezer bag, place sliced onion and bell peppers, remove excess air, and seal.
To prevent freezer burn, place the filled bag in a second 1-gallon freezer bag; carefully squeeze the bag to force out any air, then seal. On the outside of the bag, label with the recipe name and date of preparation; place it in the freezer