In a mixing bowl, combine the drained tuna, finely chopped gherkins, sundried tomatoes, and mayonnaise. Stir until well-blended, season with salt and pepper, and set aside.

Lay a tortilla flat, place spinach in the center, spoon tuna mixture over it, add bell peppers, and sprinkle cheese on top.

Fold the top and bottom of the tortilla over the filling, then fold in the sides to secure.

Preheat a pan over medium-high heat and brush with oil. Once hot, place the wrap seam-side down.

Cook for 2-3 minutes until golden brown, flip the wrap, and cook for another 2-3 minutes.

Remove from heat, cut in half, and serve warm or cold with salad or veggie sticks.