01 - Preheat oven to 400°F. Line a baking sheet with parchment paper and set aside.
02 - Wash sweet potatoes thoroughly. Pierce each several times with a fork and arrange on the prepared baking sheet. Roast for 35 to 40 minutes until tender when pierced.
03 - While the sweet potatoes bake, heat olive oil in a skillet over medium heat. Add red onion and bell pepper, sautéing for 2 to 3 minutes until softened. Stir in spinach and cook an additional minute until wilted. Remove from heat and set aside.
04 - Once sweet potatoes are cool enough to handle, slice each in half lengthwise. Gently scoop out a portion of flesh from each half to form a boat shape, leaving a 1/2-inch border intact. Reserve scooped flesh for another use.
05 - Sprinkle the inside of each sweet potato half with smoked paprika, salt, and pepper.
06 - Divide the sautéed vegetable mixture evenly among the sweet potato boats.
07 - Carefully crack one egg into each boat. Top with crumbled feta cheese if desired.
08 - Return stuffed sweet potatoes to the oven and bake for 10 to 12 minutes until egg whites are set but yolks remain slightly runny.
09 - Remove from oven and top with fresh chives, avocado slices, and a drizzle of hot sauce if desired. Serve immediately.