Heat olive oil in a large skillet over medium-high. Add cauliflower florets to pan; cook 3 minutes, stirring occasionally. Remove cauliflower from pan. Add orzo and curry powder; cook 2 minutes, stirring occasionally. Add chicken stock and salt; bring to a boil. Boil 10 minutes or until liquid is absorbed. Remove from heat. Stir in cauliflower and mint. Serve with lime wedges.