For us, this pasta bake recipe isn't overtly spicy but there's definitely lots of robust flavor going on! Between the feta, olives, chili powder, and smoked paprika, this is a big and bold dish in the flavor department. I do call for a serrano chili pepper that's deseeded. Serranos are spicier than jalapenos. However, you're flavoring a hefty quantity of chicken, pasta, and sauce so the flavor is diluted and dispersed. However, if you're concerned about the dish reading spicy, use half of a serrano chile, or simply omit it.