In a small bowl, mix together salt, black pepper, cayenne, paprika, 1/4 tsp. garlic powder, onion powder, thyme, and parsley.
Spice mixture should generously cover both sides of chicken breasts.
Heat butter and olive oil in a large heavy skillet over medium heat.
Saute chicken until golden brown, about 6 minutes on each side.
Sprinkle with 2 tsp. garlic powder and lime juice.
Cook 5-6 minutes more, stirring frequently to coat evenly with sauce.