To make the pudding: In a medium bowl, combine the yogurt, milk, chia seeds, honey, vanilla, and salt.
Cover and refrigerate overnight (or for at least 2 hours).
To make the compote: In a medium saucepan, combine the strawberries, rhubarb, honey, and water. Simmer uncovered, stirring occasionally, until the rhubarb breaks down and the sauce thickens, about 15 minutes. Cool completely (will thicken) before assembling.
To assemble the parfait: Layer the chia pudding, then the strawberry-rhubarb compote in 4 or 5 half-pint glass jars. Repeat these layers a second time. If desired, top with granola or chopped nuts.