This is a little easier than some other ones I've seen on here! Basically let's pretend the jalapeno and the seasoning have no calories, and from there estimate how much of that .35 lb (about 5.3 oz precooked) is meat, and how much is cheese. And the good thing is - an oz of ground beef (depending on fat content, premixed burgers are usually higher in fat content unless otherwise said) and an oz of cheese aren't that far off from each other in terms of calories, so you're probably looking at less than 100 cals off one way or another when you estimate. If you go with cooked estimates in your tracker, you're probably safe guessing 3.5 oz ground round, 1 oz cheese (unless it looks way the heck cheesier to you). I'm assuming .5-1 oz lost in cooking.