MARINATED Chicken: Combine all ingredients, except chicken, into a wet rub. Coat chicken with rub; refrigerate at least 30 min.
VELVEETA-PIMENTO Cheese: Combine all ingredients.
ASSEMBLY: GRILL chicken on medium-high heat, turning occasionally, until done (165ºF). Thinly slice into strips.
SPREAD about 1/2 cup Velveeta-Pimento Cheese onto half of each tortilla. Cover evenly with 4 oz. chicken. Fold tortilla in half. Cook on well-oiled griddle on high heat 2 min. on each side or until golden brown on both sides. Cut into quarters.
ARRANGE on plate. Garnish each serving with 1 tsp. scallions.