Cook spaghetti and reserve 1 cup pasta water for the sauce.
Cut chicken into bite size pieces.
Heat skillet on high and add a tablespoon olive oil and garlic and onion and stir.
Place chicken in the skillet with tomatoes, lemon juice and anchovy paste scoop out a cup of pasta water stir and cook until chicken is fully cooked.
Add olives and capers and cook 2 minutes.
Mix with spaghetti.
Mix well, serve with grated Romano Cheese.