Combine the water and rice, bring to a boil, then simmer 50 minutes.
Preheat oven to 375 F.
Lightly steam the broccoli until just tender.
Combine the flour, lemon pepper, black pepper, salt and garlic in a small bowl.
Dice the mushroom and sauté in 2 teaspoons of olive oil or butter. Cook until no mushrooms are longer watery. Set aside.
Melt the butter in a medium saucepan. Saute the onions on medium-high heat for about 5-7 minutes, stirring frequently.
Add the flour mixture and cook for 1 minute, stirring and scraping constantly to avoid burning.
Add the milk in portions, beating with a wire whisk. When all of the milk is in, increase heat and bring to a boil, whisking constantly. When mixture begins to bubble and thicken, decrease heat and simmer for 5 minutes.
Add 1 cup shredded cheese and stir in until completely melted. Stir in cooked mushrooms.
Combine the broccoli, rice, cheese sauce, and chick peas in a 2 quart casserole dish. Layer with sliced tomatoes then top with 1/3 cup shredded cheese or bread crumbs. Bake for 35-40 minutes until cheese is just brown and mixture is bubbly.