Cut the bacon into small pieces and add them to the skillet.
1 slice of raw bacon
While the bacon is cooking, chop the kale and dice the onion. Add both to the bacon with a pinch of salt and cook until the kale reduces in size by at least half, around 5 minutes. Remove from heat and set aside.
85 g kale, ½ onion
In a bowl add the drained tuna, the oats, an egg and juice of ½ lemon. Pour the cooked kale and bacon mixture in and mix everything with a spoon. Let it sit for a few minutes.
1 6 oz can of tuna, ½ cup old-fashioned oats, ½ lemon for juice, 1 large egg
Meanwhile, reheat the skillet you cooked the kale in over medium-high heat.
Form the tuna mixture into four patties. The mixture is watery, squeeze most of the moisture out when you form the patties. Then place directly in the hot skillet. Once all patties are in, lower the heat to medium. Cook for 4-5 minutes until they set and then gently flip. Cook an additional 4 minutes until warmed through.
Notes
There is no need to add any additional in the skillet beyond what renders out of the bacon.
I was trying to keep carbs on the lower end. These may benefit from additional oats or even some breadcrumbs to help hold them together. If you make as is, just be gentle when flipping.
The salsa was just a pint of grape tomatoes halved and tossed with a clove minced garlic, a minced habanero, a pinch of salt, a sprinkle of dried parsley, and the juice from the other half of the lemon.