Source: Louisiana Pizza Kitchen

10 boneless, skinless chicken breasts
1 cup fresh spinach, julienned
1 cup portobello mushrooms, julienned and saut?d
1/2 cup roasted garlic, mashed
1/2 cup caramelized onions
1 cup roasted red bell peppers, julienned
3 tablespoons fresh basil, chopped fine
3 tablespoons chopped parsley
2 cups feta cheese
2 cups grated mozzarella cheese
1/4 cup sun-dried tomatoes, julienned
1/2 teaspoon salt
1/2 teaspoon three pepper mix

Place chicken breasts between two pieces of plastic wrap and pound chicken flat. Season with salt and 3 pepper mix on both sides.

Combine all ingredients, except chicken, in a mixing bowl. Reserve. Stuff 3 ounces of mixture inside of chicken breast and roll tight in plastic wrap. Bake until done.