Preheat the oven to 350F.

Hard boil the eggs using your preferred method.

While those are going, in a large skillet, fry the bacon.  When done, remove with a slotted spoon and set aside.

While that's going, prepare the rest of your ingredients.  Once the eggs are cooked, chop them, too.

In a pot, make your sauce by melting 1 T butter, then add flour and let it bubble up.  Pour milk in, stirring constantly until the mix thickens.  Add salt and pepper, then add 1/2 cup cheese in small amounts, stirring constantly.  Let each addition of cheese melt before adding the next lot. 

In the skillet, add butter if necessary, then saute onions and garlic.  Add tomatoes, chili powder, and chipotle; bring to a boil.  Stir in bacon, then chopped boiled eggs.

Alternate layers of sauce and tomato mixture in a casserole dish (7"x7" or smaller).  Top with remaining cheese and bread crumbs.

Bake until breadcrumbs brown and casserole is bubbly, approximately 25 minutes, but this may vary depending on your oven.