Simple Tuna Fish Tacos

Heat olive oil in a skillet over medium heat. Add tomatoes, green onions, garlic, cumin, and oregano; saute until tomatoes are very soft, about 5 minutes. Reduce heat to low. Add drained tuna; gently break into bite-sized pieces and mix in. Season with red pepper flakes, salt, and pepper. Cover and cook until tuna is warmed through, 2 to 3 minutes more.

Stack 6 tortillas on a microwave-safe plate and cover with a damp paper towel. Heat in the microwave until pliable, 15 to 20 seconds. Repeat with remaining tortillas. Spoon tuna mixture over warm tortillas.