Remove my first letter and I am in Repeat that letter and I become paint Remove the first and last letters and I am me Still unsure? THINK, but subtract two letters

I'm a dry expanse, a barren plight, Sounding like what you might forfeit outright. What am I?

I'm a person, or I represent one anyway, In virtual worlds you act through me, you could say, On the big screen I'm blue and really tall, On a smaller screen, I bend the elements, some elements? No, ALL

I’m not a food, but I come with every bite. I can be burned without flame or light. I’m measured in numbers, not in spoons. What am I?

As a food, I'm as super as can be. But some have a hard time pronouncing me.