Combine first 3 ingredients in a bowl.
Beat egg whites with a fork just until foamy. Dip both sides of chicken in egg; dredge in pecan mixture. Arrange chicken breasts on a lightly greased aluminum foil-lined baking sheet.
Bake at 400° for 20 to 25 minutes or until chicken is done. Serve with Creamy Mushroom-Artichoke Sauce, if desired.
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