Pre-heat the oven to 375fFirst start with draining the liquid from the canned chicken, then add the chicken to a small mixing bowl.
To the chicken add 1/2 of an onion thinly cubed.Then to the bowl add 1/2 cup of mayonnaise, 3 garlic cloves that had been pressed, 1 teaspoon smoked paprika, 1 teaspoon of ground black pepper, and 1 tablespoon of chopped parsley. With a fork mix it very well.
Next chop 1 small tomato into small cubes and put it into a sieve to drain for a few minutes. This helps to prevent the sandwiches from becoming soggy.
While the tomato is draining, to the chicken add 1 cup of cheese and give it a good mix. Discard the liquid from the tomatoes and add the tomato cubes into the chicken, and gently mix it in.
Spread 2 tablespoons of the chicken mixture onto each slice of bread, then place them on a baking sheet.Bake the chicken sandwich melts in the oven for 8-10 minutes.