Add olive oil, orange juice and zest, rosemary, garlic and hot pepper flakes to small saucepan over medium-high heat. Cook, stirring occasionally, until mixture is warm and garlic is fragrant, about 2 minutes.
Place olives and pimientos in medium, non-reactive bowl. Pour warm olive oil mixture over olives and pimientos; set aside until cool. Stir in cheese; cover with plastic wrap. Refrigerate at least 4 hours, or up to 3 days.
Alternately thread cheese, olives and pimientos among thirty 6” skewers. Transfer to serving plate; drizzle with marinade.