For the burgers: Mince the tuna in a food processor.
In a large bowl, add the lime zest and juice, chipotle adobo, chives, garlic and minced tuna and mix until combined. Season with salt and pepper. Shape the tuna mix into 1/2-inch-thick patties and refrigerate for about an hour. This will help the patties stay intact and not crumble when cooking.
For the chipotle slaw: In a medium bowl, add the sour cream, mayonnaise, chipotle adobo, vinegar, agave, lime juice and mustard and mix until combined. Season with salt and pepper. Add the green and red cabbage, carrots and kale and toss together. Refrigerate for later.
Heat a heavy nonstick skillet or griddle over medium-high heat. Drizzle the skillet with olive oil. Place 3 patties in the skillet and sear for 2 to 3 minutes on each side. Repeat with the remaining patties.
To serve, place each patty on a bottom bun half and top with some chipotle slaw and a bun top.