Heat oven to 425. Line a rimmed baking sheet w/ foil and spray w/ cooking spray. Cut off wing tips and discard.
In saucepan, heat 1-1/2 cups picante sauce, marmalade and mustard over medium heat. Bring to boil. reduce heat to medium-low and cook 30-40 mins, until reduced to 3/4 cup sauce, stirring occasionally.
Place chicken in lg bowl. Add remaining picante sauce and toss to coat. Place chicken on baking sheet. Bake 40 min or until chicken is cooked through, turning the chicken 1/2 way through cooking time. Baste chicken w/ picante-mustard sauce the last 10 min of cook time.. Sprinkle w/ sesame seeds.