In a Dutch oven, heat oil. Add onions, green peppers, and garlic; sauté until vegetables are tender, about 5 minutes. Stir occasionally. Stir in ham, tomatoes, rice, chicken broth, salt, thyme, cayenne, and bay leaf. Cover and bake at 350° for 45 to 50 minutes, or until rice is tender. Add shrimp. Cover and bake 10 minutes longer, until shrimp is cooked through and tender.
Jambalaya recipe serves 4.