Preheat oven to 400° and line a large baking sheet with parchment paper.
In a large bowl, combine mayo, parmesan, artichoke hearts, frozen spinach, garlic, and salt.
Divide each dough into 6 pieces to make 18 pieces total.
Stretch and roll each piece into a long rectangle.
Spoon about 2 tablespoons of the dip mix into the center of the dough.
Roll the dough tightly into a rope.
Twist into a pretzel shape and lay on pan.
Put baking soda in a bowl with the warm water. Whisk to dissolve the soda.
Brush this onto the pretzels with a pastry brush.
Let sit 10 mins to dry.
Brush on the melted butter and sprinkle with salt and parsley.
Bake 18 to 20 minutes until golden brown.