in a wide shallow bowl, combine flour, salt, pepper and oregano.
roll chicken pieces in flour mixture.
in a large kettle, melt shortening over medium-high heat.
add chicken and cook for 8 to 10 minutes until browned.
remove chicken from kettle and set aside.
add bell pepper and onions to kettle and sauté until onions are transparent.
stir in ham and tomatoes.
cook over medium heat for 10 minutes.
return chicken to kettle and stir well.
reduce heat to low, cover and cook for 30 minutes, or until chicken is tender and cooked thoroughly.
remove chicken from tomato mixture.
when it is cool enough to handle, remove meat from bones and cut into bite-sized pieces.
add chicken broth and rice to tomato mixture and stir well.
bring to a boil over high heat.
reduce heat to low and cover, placing a thick paper towel or folded tea towel between kettle and lid. (Be careful not to let the towel hang down and touch the burner.)
simmer for 20 minutes.
add peas, parmesan cheese and cooked chicken and stir well.
cover and cook for 5 more minutes to heat all ingredients.