Heat oven to 350°F. Grease 13x9-inch pan with shortening; lightly flour. In small microwavable bowl, microwave baking chocolate on Medium (50%) 1 minute to 1 minute 30 seconds, stirring every 30 seconds, until softened and chocolate can be stirred smooth.
In medium bowl, beat butter and sugar with electric mixer on medium speed until light and fluffy. Add eggs, one at a time, beating after each addition just until blended. Add melted chocolate; beat just until blended. On low speed, beat in flour and salt just until blended. Stir in vanilla and 1/2 cup each of the pecans and chocolate chips. Spread batter in pan. Sprinkle with remaining 1/4 cup each pecans and chocolate chips.
Bake 40 minutes or until set. Cool completely on cooling rack. Cut into 8 rows by 4 rows.