1.Preheat Oven To 350 Degrees F (175 Degrees C). Bring A Saucepan Of Lightly Salted Water To A Boil. Add Chicken Breasts, And Boil Until Easily Shredded, About 20 Minutes. 2.Saute Onion In A Medium Saucepan Until Soft. Remove From Heat And Stir In Salsa, Then Stir In Cheese Until Melted. Add Chicken And Mix All Together. 3.Roll Out Biscuits Individually, Adding A Little Of The Chicken Mixture To Each One; Then Roll Up, Secure With Toothpicks And Place On A Lightly Greased Cookie Sheet. 4.Bake At 350 Degrees F (175 Degrees C) For About 10 Minutes, Or Until Biscuits Are Golden And Hot.