So this is my first year of growing actual food other than herbs. I'm just doing jalapenos and red bell peppers in pots. My jalapeno plant has 3 peppers on it so far (yay!), and one of the peppers is about the size of my index finger. It's not as big as the ones I get at the supermarket. My question is, when to pick it? Is there a certain way to tell, or do I just pick it when I feel like it?