Preheat the oven to 350°F. Lightly grease a mini muffin pan with nonstick spray.
In a large bowl, whisk together the eggs, oil, water, and vanilla. Add the brownie mix and stir until just combined.
Divide the batter among the mini muffin cups. Bake for 15–20 minutes, or until a tester comes out clean. Cool in the pan for 5 minutes, then transfer the brownie bites to a wire rack to cool completely.
Wash and thoroughly dry the strawberries, then remove their tops. Prepare the marshmallows and cooled brownie bites for assembly.
Thread the strawberries, brownie bites, and marshmallows onto the wooden skewers in your preferred pattern. Arrange the kabobs on a parchment-lined baking sheet.
Place the chocolate chips in a microwave-safe bowl and heat in 30-second intervals, stirring between each, until melted and smooth.
Transfer the melted chocolate to a piping bag or zip-top bag with a small corner snipped off. Drizzle over the kabobs and refrigerate until the chocolate sets.