Wash the blueberries well. What I like to do is soak them in water and baking soda for 15 minute, rinse, prior to eating.
In a large skillet over medium-high heat, add the blueberries, water, and lemon juice.
Let the mixture cook for about 6 minutes, stirring occasionally.
Gently mash the blueberries with a wooden spoon as they cook for a chunky jam. For a smoother jam, use a potato masher or an immersion blender to puree to your desired texture.
Taste the mixture; if you prefer it sweeter, stir in honey, maple syrup, or sugar.
Remove skillet from heat. Stir in chia seeds until evenly combined.
Let the jam cool for about 5 minutes. The chia seeds will thicken the mixture into a jam-like consistency.
Transfer to a clean jar, cover, and refrigerate. The blueberry chia jam will continue to thicken as it chills.