In microwavable bowl, microwave chocolate and peanut butter uncovered on High 1 minute, stirring once, until melted and smooth. Dip tip of 1 lollipop stick into chocolate mixture and insert stick into 1 brownie ball no more than halfway. Repeat. Return brownie pops to cookie sheet. Refrigerate 5 minutes. Remove from refrigerator a few at a time. Dip each ball into chocolate mixture to cover; tap off excess. Insert opposite end of stick into foam block. Sprinkle tops with peanuts and salt. Refrigerate until set.