Soak wooden skewers in water for 30 minutes.
Place the scallops on paper towels to blot dry. Thread 2 skewers through 5 scallops. Repeat 2 more times. Sprinkle mint and rosemary over the scallops. Drizzle extra-virgin olive oil generously over the skewered scallops. Grind black pepper over the skewered scallops. Drizzle more olive oil over top and refrigerate for 30 minutes.
Season scallops with salt. Oil a hot grill and place the skewers over high heat for about 2 minutes on each side. At this point, you may brush on teriyaki or your favorite barbecue sauce. Serve immediately over pineapple salsa.