Prepare the filling: mix cream cheese, cilantro and Cajun seasonings together until well combined and evenly mixed.
Spread bread crumbs in a shallow dish or pie plate.
Slice each jalapeno in half lengthwise. Remove seeds and membranes, but leave stem end in tact. Fill each jalapeno half with cream cheese mixture and press, cheese side down, into the bread crumbs to cover the cheese filling and form a crust.
Place jalapeno's on a tray, cheese and breadcrumbs side up, and lightly spray with olive oil.
Heat grill to medium heat. Spray with olive oil to prevent sticking.
Place jalapenos on the grill, cheese side up. Close lid, and cook 8-10 minutes.