Scrub and thinly slice sweet potatoes(leave skins on). Place in a skillet and cover with water. Bring to a boil, reduce heat, cover and simmer for 10 min. Drain potatoes and wipe skillet dry with paper towel.
Add the oil to the skillet and heat over med. heat. Add potatoes, salt and pepper, and cook, without stirring, for 3-4 min., until starting to brown. Flip and cook for 3-4 min. on other side.
During last minute of cooking, sprinkle the potatoes with the herbs, cover and cook final minute. Serve garnished with sprigs of the fresh herbs.