In a blender, food processor, or with hand mixer, combine all ingredients but the chia seeds. Process until texture is smooth and all ingredients are evenly blended.
Fold in chia seeds, so that they are evenly distributed throughout the pudding mixture. Cover and place in refrigerator until firm.
If pudding hasn’t set after two hours, stir in 1 more tablespoon chia seeds and allow another hour for it to set.