1. Preheat oven to 400°.
2. Arrange chicken in an 8-inch square baking dish; squeeze lime juice evenly over chicken.
3. Sprinkle evenly with taco seasoning.
4. Slice chiles lengthwise, cutting to, but not through, other side; open flat.
5. Place 2 chiles over each chicken breast. For larger breasts, use enough chilies to cover completely.
6. Cover dish with foil; bake at 400° for 30 minutes.
7. Sprinkle cheese evenly over chiles and chicken; bake, uncovered, an additional 5 minutes or until cheese melts. If you want to brown the cheese, turn your oven to broil for the last 5-7 minutes but watch carefully because it can burn quickly.