Add the strawberries, chia seeds, vanilla, sugar, and water to a saucer and cook over low heat for 10 to 15 minutes. Mix frequently. The jam will thicken slowly. When you see the bottom of the pan, turn it off, set aside, and let it cool completely.
To Make the Plantains:
Peel the plantains and cut them in half from top to bottom. Heat the oil in a non-stick pan and add the plantains. Cook for 3 to 5 minutes and flip.
Serve the plantains on a platter, drizzle with condensed milk and finish with some spoonfuls of strawberry chia jam.