In shallow dish, combine flour, garlic salt and black pepper. Dredge chicken breast halves in mixture.
In large skillet heat 4 tbs butter and olive oil. Sauté chicken over medium heat turning once, until lightly golden brown on both sides, about 3 to 6 minutes per side.
Remove chicken from pan and keep warm. Add chicken broth and wine to pan, stirring to scrape bits off bottom.
Bring mixture to a boil and cook until reduced by half, about 6 minutes. Stir in lemon juice, artichoke hearts, and capers. Cook for a minute.
Turn off heat and whisk in remaining 1 T butter and chopped parsley. Pour hot sauce over chicken breasts.