Preparation

In large zipper-seal plastic bag, place 1 cup orange juice, 2 tablespoons olive oil, one-half minced garlic and a dash of salt and pepper. Seal tightly; shake to combine ingredients. Add chicken; seal tightly and marinate refrigerator for 15 to 20 minutes. Remove chicken from marinade; discard marinade. Grill chicken until fully cooked; cool. Cut chicken into thin strips; reserve.

In small saucepan, heat remaining 1 tablespoon olive oil over medium-high heat. Add onions; sauté until soft. Add remaining one-half minced garlic and 1 cup orange juice; simmer for 3 to 4 minutes. Whisk in barbecue sauce and simmer for 5 minutes; remove from heat and cool.

Preheat oven to 425° F. Grease two baking sheets.  Dust counter with flour. Divide pizza dough in half. Use a rolling pin to roll out one-half of dough into rectangular shape approximately 1/8-inch thick. Gently place dough onto baking sheet; repeat with remaining one-half dough. Bake sheets of flatbread dough for 5 to 8 minutes; flip over with spatula or tongs and bake additional 5 to 8 minutes. Spread about ¾-cup barbecue sauce onto each flatbread. Divide chicken strips and cheese among two flatbreads; return to oven and bake for 15 minutes, or until the cheese is melted and the crust is golden. Remove flatbreads from oven and place on cutting board; cool for about 4 to 6 minutes. Garnish with dollops of sour cream; sprinkle with cilantro and green onions.  Cut and serve immediately.