Preheat oven to 375°F. Mix artichokes, cheese, tomatoes, and basil in medium bowl. Using small sharp knife and working with 1 chicken breast at a time, cut 2-inch-long slit horizontally into 1 side of chicken breast. Move knife back and forth in slit to form pocket. Divide 1 cup cheese mixture among chicken pockets (reserve remainder for frittata). Press edges to seal. Sprinkle chicken with salt and pepper.
Heat oil in heavy large ovenproof skillet over high heat. Add chicken; cook 2 minutes. Turn chicken over; transfer skillet to oven. Bake until cooked through, about 10 minutes.
Per serving: 483 calories, 32 g fat (9 g saturated), 100 mg cholesterol, 618 mg sodium, 9 g carbohydrates, 1 g fiber, 35 g protein Nutritional analysis provided by Nutrition Data See Nutrition Data's complete analysis of this recipe ›