Preheat the oven to 400 degrees F.
Defrost spinach in microwave.
Drizzle a little oil on large plate and have a rack sitting on baking a sheet or slotted broiler pan nearby. Halve the bacon across and reserve on a meat-safe prep board. Halve the chicken tenders and slide into the dish with olive oil. Season with salt, pepper, poultry seasoning and paprika. Wring out the spinach in a clean dish towel and put the spinach in a small dish. Top each piece of chicken with a little spinach and wrap with bacon. Arrange, seem side down, on the baking pan. Bake until golden and firm, 18 to 20 minutes.
Meanwhile, bring a few inches of salted water to a boil in a medium saucepan over medium heat. Have a large bowl of ice water, for shocking the vegetables, ready as well. Add the radishes to the boiling water and blanch for 1 minute, then remove them and shock in ice water. Repeat with the pepper removing them with tongs or small strainer or spider. Add the asparagus and cook until crisp-tender, about 2 to 3 minutes, then shock and reserve.
If using fresh onions, add last and cook for 3 minutes to loosen skins. Shock them and use a towel to wipe away the skins.
Arrange the meat, vegetables and pretzels around a fondue pot and serve with cubed bread in a basket.
Put the wine in a fondue pot and bring to a bubble over medium heat. Reduce the heat to a simmer. Add the lemon juice, then add the cheeses in handfuls, stirring in a figure-8 motion with wooden spoon. When the cheese is fully melted, stir the cornstarch into the brandy, in a small bowl until smooth, then add to cheese. Season with nutmeg and cayenne and serve over a warming station for your fondue pot.