This recipe was rather confusing. Note there is no cooking time or temperature. I am assuming this is a casserole so I guess the final heating would take place in an appropriate baking dish. And what is a chop plate? It is a small platter for meat.

Cook bacon until brown and crisp.
Add and brown lightly in bacon fat, minced onion and green pepper.
Add shredded half of the American cheese, almonds, pimento, peas and cooked chicken.
Mix lightly with hot macaroni. Heat, using chicken broth to moisten.
(May be prepared in advance and frozen, adding peas just before final heating.)
While hot, sprinkle top with remaining cheese.
NOTE: Other recipes I have found for this online call for an oven temp of 350°.
Place in a 9 x 13 baking dish and cook for 30 minutes covered, and then 15 minutes uncovered. 
Serve hot on chop plate garnished with tomato slices, parsley and ripe olives. NOTE: I don't know why you would serve this on a chop plate. Just serve it from the casserole dish you baked it in. 😂