Sprinkle with 1 Tbsp. of the dressing mix and the hot pepper sauce; turn to coat. Cover. Refrigerate 1 to 2 hours to marinate.
Mix flour and remaining dressing mix in plastic bag.
Add chicken, 1 piece at a time; close bag and shake to coat.
Heat oil in large skillet on medium-high heat.
Add chicken; cook 10 min. or until browned on all sides. Reduce heat to medium; cover. Cook 30 min. or until chicken is cooked through, turning occasionally.