1. Preheat grill to medium-high heat (350° to 400°).
2. Place lamb chops in a large bowl, and drizzle with olive oil. Sprinkle with rosemary and next 4 ingredients, and toss well to coat. Let stand 30 minutes. Meanwhile, prepare Mint Chimichurri.
3. Place chops on greased grill rack. Cover and grill 3 to 4 minutes on each side for medium-rare (145°), 8 minutes for medium (160°), or 10 minutes for well-done (170°). Remove from grill; let stand 5 minutes. Serve with Mint Chimichurri.