Preheat oven to 210 degrees Celcius. Spray brussels sprouts lightly with Pam, add garlic powder and salt to taste.
Heat skillet for chicken and turn on medium-high, spray with cooking spray, and then fry thinly sliced chicken breast. Allow the sides to get crispy, once they are done add in the brussels sprouts and continue to sauté at a medium-low heat while adding the lemon juice.