In large bowl, toss salmon and cracker crumbs; set aside. In heavy skillet, cook onion and red bell pepper in olive oil until tender. Add to bowl and mix gently. Add dill weed, egg, and lemon juice and mix gently.
Form into four patties. Add more olive oil and to the same skillet. Add patties to skillet when hot. Cook patties for 3-4 minutes on each side until golden brown.