Prepare brownie mix according to package directions; spread batter into a greased 15-inch pizza pan. Bake at 375 degrees F. 15 to 20 minutes or until a wooden pick inserted in center comes out clean. Cool completely in pan on a wire rack. Drain pineaplle tidbits well, pressing between layers of paper towels to remove excess juice. Beat cream cheese and sugar in a medium mixing bowl at medium speed with an electric mixer until smooth. Spread mixture over cooled brownie crust; arrange pineapple, banana, strawberries, and pecans on top. Combine chocolate and butter in a 1-cup liquis measuring cup; microwave at HIGH 1 minute, stirring after 30 seconds. Drizzle over fruit; chill 1 hour and serve immediately. Yield 16 servings.