If i chew my skittles and then spit them out how many calories am i absorbing ? is it less than just eating them normally ?

Skittles: Yes if you spit out the skittles you would be absorbing less calories than if you ate them normally.

Impossible to know: From this information it's impossible to calculate how many calories you're absorbing. A more pertinent question, though, is why you're so focused on calories that you'd consider doing this with your food? Is it possible you're dealing with an eating disorder? I suggest discussing your eating concerns with your family physician -- at least to begin with.