Place a large skillet over medium heat and add in the olive oil. Then, add in the garlic and red pepper flakes. Let cook for 30 seconds and then add in the onion. Cook for 2 minutes and then add in the cabbage and season with salt and pepper.

Cook the cabbage, tossing frequently, for about 2 minutes and then add in the chicken broth. Let reduce fully.

Add in the tuna and toss to combine, letting cook for about 1 minute to heat up.

Divide cabbage and tuna mixture into bowls and top with almonds. Enjoy!