Heat olive oil in a large nonstick skillet over medium-high heat.
Coat 2 tbsp of butter with flour and set aside
Pat the pork dry with some paper towels
Season it with garlic powder and salt.
Coat pork in flour, shaking off excess, and set aside.
When oil is hot, melt 1 tbsp of butter. Add pork and cook each side for 3 to 4 minutes until done. (You will probably need to do this in batches.)
Remove pork and add onion to the skillet. Pour wine into the pan and cook for 2 minutes until the wine reduces by half. Add chicken stock, 2 tbsp butter, salt. Cook until liquids reduce by half, about 5 to 6 minutes.
Return pork to the pan, add capers (if using), 2 tbsp dredged butter, and lemon juice. Cook for 2 minutes or until sauce thickens. Add parsley.