Chicken with brownies

1 lb ground chicken thighs 1 large white onion 1 small green pepper 1 small red pepper 2 minced fresh garlic cloves 2 tablespoons chili powder (or to taste)[...]

1 1/2 lbs chicken breasts 14 1/2 ounces Italian-style diced tomatoes 12 ounces fettuccine pasta (1 box) 1 red bell pepper 8 ounces sliced white mushrooms 2[...]

1 tablespoon olive oil 1 cup chopped onion 3 (4-ounce) skinless, boneless chicken thighs, cut into bite-sized pieces 1 teaspoon ground cumin 1/4 teaspoon[...]