Heat oven to 350°F.
Combine flour and baking soda. Beat butter and sugar in large bowl with mixer until light and fluffy. Add dry pudding mix; beat until blended. Add eggs; mix well. Gradually add flour mixture, mixing well after each addition. Stir in chocolate.
Drop tablespoons of dough, 2 inches apart, onto baking sheets.
Bake 10 to 12 min. or until edges of cookies are lightly browned. Cool 1 min. on baking sheets. Remove to wire racks; cool completely.
