Preheat oven to 375F. Line a baking sheet with parchment paper, set aside.
Drain chicken and break into small pieces. Chop spinach. Chop artichoke into small pieces.
In medium bowl, combine chicken, spinach, artichoke, cream cheese, mayo, feta cheese, mozzarella cheese and dash of salt and pepper.
Open crescent tube and separate triangles. Add some of the chicken mixture to the wide end of triangle. Take the opposite end and fold it over. Then fold the rest of the crescent and pinch together to form a ball. (Be sure to pinch together really well, or else some of the cheesy chicken mixture may ooze out.)