Spray broiler
pan with nonstick cooking spray and broil chicken about 6 inches from heat
source. Broil 6 to 8 minutes on each side or until juices run clear. Remove
from oven and cool 5 minutes. Remove skin and season with garlic powder,
salt and pepper and cover with foil.
In a large skillet,
heat oil over medium-high heat. Add mushrooms, garlic, salt and onion. Cook
until vegetables wilt, about 4 minutes. Add chopped basil, tomatoes, vinegar
and pepper. Cook an additional 2 minutes or until thoroughly heated.
To serve, arrange
chicken on plates and sprinkle with half of cheese. Top each serving with
mushroom mixture and sprinkle with remaining cheese. Garnish with basil leaves
and serve immediately.